NNEEE RR

EELLEECCTTRROOMMAAGGNNEETTIICC WWAAVVEE

WWAAVVEE OOPPTTIICCSS,,CHEMICAL KINETICS, SURFACE CHEMISTRY, HALOALKANES & HALOARENES

CONTROL & CO-ORDINATION, CHEMICAL CO

MINERAL NUTRITION, PHOTOSYNTHESIS IN

1. An object is placed at a distance of 50 cm from a convex mirror . A plane mirror is placed infront of the convex mirror in such a way that it covers half of the convex mirror. If the distance between object and plane mirror is 30cm then there is nbetween the images formed by two mirrors, the radius of curvature of convex mirror will be a) 50 cm b) 25cm

2. Two plane mirrors are inclined at an angle of 30then the first four images of an object O pbetween the two mirrors are correctly represented by

3. The plane mirror makes an angle 30horizontal. If a vertical ray is incident on a mirror, then what is the angle between mirror and reflected ray? a) 600 b) 900 c) 45

4. A short linear object of length b lies along the axis of a concave mirror of local length f at a distance u from the pole of the mirror. Find the approximate size of the image

a)

2f

u f

−

b)

c)

22 f

bu f

−

d) None of these

5. A point sources of light B is placed at a distance L infront of the centre of a mirror width ‘d’ hung vertically on a wall . A man walks infront of the mirror along a line parallel to the mirror at a distance 2L from it as shown in fig, the greatest distance over which he can see the image of the light source in the mirror is

0033..0033..1199

VVeerrssiioonn CCooddee:: AA

EEETT MMOODDEELL EENNTTRRAANNRREEPPEEAATTEERRSS –– MMEEDDIICCAALL ((

EESS&& PPRRIINNCCIIPPLLEESS OOFF CCOOMMMMUUNNIICCAATTIIOONN

CHEMICAL KINETICS, SURFACE CHEMISTRY, HALOALKANES & HALOARENES

ORDINATION, CHEMICAL CO-ORDINATION & INTEGRATION, TRANSPORT IN PLANTS,

MINERAL NUTRITION, PHOTOSYNTHESIS IN

An object is placed at a distance of 50 cm from a convex mirror . A plane mirror is placed infront of the convex mirror in such a way that it covers half of the convex mirror. If the distance between object and plane mirror is 30cm then there is no parallax between the images formed by two mirrors, the radius of curvature of convex mirror will be

c) 12.5 cm d) 100cm Two plane mirrors are inclined at an angle of 300 then the first four images of an object O placed between the two mirrors are correctly represented by

The plane mirror makes an angle 300 with horizontal. If a vertical ray is incident on a mirror, then what is the angle between mirror and reflected

c) 450 d) 300 A short linear object of length b lies along the axis of a concave mirror of local length f at a distance u from the pole of the mirror. Find the approximate size of the image

2f

u f

+

d) None of these

A point sources of light B is placed at a distance L infront of the centre of a mirror width ‘d’ hung vertically on a wall . A man walks infront of the

llel to the mirror at a distance 2L from it as shown in fig, the greatest distance over which he can see the image of the light source in the

a) d/2 6. A concave mirror of local length f

producfrom the mirror?

a) − +

c) ( 1)n

7. The local length of a concave mirror is 30cm. Find the position that the image is three times the size of the object .a) 20cm (only) c) 30cm (only)

8. An optical fibre consists of core of refractive index μ1 surrounded by a cladding of refractive index μ 1). A beam of light enters from air at an angle with axis of fiber. The highest angle ray can be travelled through fiber is

a) cos

c) tan

9. A light beam is travelling from region I to region IV (refer figure) the refractive index in regions I,II,III

and IV are

angle of incidence entering region IV is

a) sin

c) sin

10. The refractive index of the material of prism is and its prism angle 30polished. The incident beam of light will return back for the angle of incidencea) 60c) 30

A

NNCCEE EEXXAAMM ((MMOODDUULLEE –– II)) NNSS,, RRAAYY OOPPTTIICCSS &&OOPPTTIICCAALL IINNSSTTRRUUMMEENN

CHEMICAL KINETICS, SURFACE CHEMISTRY, HALOALKANES & HALOARENES, NEURAL

ORDINATION & INTEGRATION, TRANSPORT IN PLANTS,

MINERAL NUTRITION, PHOTOSYNTHESIS IN HIGHER PLANTS

a) d/2 b) d c) 2d d) 3d A concave mirror of local length f0 (in magnitude) produces a real image n times the size of the object from the mirror?

0

( 1)nf

n

− + b) 0

( 1)nf

n

+

0

( 1)nf

n

− d)

2

0

( 1)nf

n

− +

The local length of a concave mirror is 30cm. Find the position of the object infront of the mirror, so that the image is three times the size of the object .a) 20cm (only) b) 40 cm (only) c) 30cm (only) d) 20cm or 40cm An optical fibre consists of core of refractive index

surrounded by a cladding of refractive index ). A beam of light enters from air at an angle

with axis of fiber. The highest angle ∝ for which ray can be travelled through fiber is

a) cos -1 2 22 1µ − µ b)sin -1 2 2

2 1µ − µ

tan -1 2 21 2µ − µ d) sec -1 2 2

1 2µ − µA light beam is travelling from region I to region IV (refer figure) the refractive index in regions I,II,III

and IV are 0 0 00 ,

2 6 8

n n nn and respectively . The

angle of incidence θ for which the beam just misses entering region IV is

1 3sin

4−

b) 1 1sin

8−

1 1sin

4−

d) 1 1sin

3−

The refractive index of the material of prism is and its prism angle 300 One of its refracting faces is polished. The incident beam of light will return back for the angle of incidence a) 600 b) 450 c) 300 d) 00

Time : 3 Hours

NNTTSS,,

NEURAL

ORDINATION & INTEGRATION, TRANSPORT IN PLANTS,

d) 3d (in magnitude)

es a real image n times the size of the object

f

The local length of a concave mirror is 30cm. Find of the object infront of the mirror, so

that the image is three times the size of the object .

d) 20cm or 40cm An optical fibre consists of core of refractive index

μ 2(< ). A beam of light enters from air at an angle ∝

∝ for which

2 22 1µ − µ

2 21 2µ − µ

A light beam is travelling from region I to region IV (refer figure) the refractive index in regions I,II,III

respectively . The

for which the beam just misses

The refractive index of the material of prism is √2 One of its refracting faces is

polished. The incident beam of light will return back

11. A glass prism of refractive index 1.5 and angle of prism 60 is put in contact with another prism of refractive index 1.6 when a ray of light is made incident on this combination normally then it emerges out un deviated. The angle of second prism will be a) 60 b) 50

12. The refractive indices of material of a prism for blue and red colours are 1.532 and 1.514 respectively. Calculate angular dispersion produced by the prism if angle of prism is 80 a) 0.1440 b) 1.1220

13. A glass prism (μ=1.5) is dipped in water (shown in figure. A light ray is incident normally on the surface AB. It reaches the surface BC after T.I.R

a) sin θ≥8/9 c) sin θ≤2/3

14. A prism having an apex angle 4index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray deviated after reflection from the mirror.

a) 1760 b) 40 15. The radius of a glass ball is 5cm. There is an air

bubble at 1cm from the centre of the ball and refractive index of glass is 1.5. The position of image viewed from surface near the bubble is a) 3.63 cm c) 2.12 cm

16. An image is formed on the screen by a convex lens. When upper half part lens is covered with black paper , then : a) Half images is formed b) full images is formed c) Intensity of image will be enhanced) None of these

17. A convex lens is made out of a substances of refractive index 1.2. The two surfaces of lens are convex. If this lens is placed in water whose refractive index is 1.33, it will behave as :a) convergent lens c) Plane glass plate

18. A convex lens when placed in the first position forms a real image of an object on a fixed screen. The distance between the object and the screen is75 cm. On displacing the lens from first position by

A glass prism of refractive index 1.5 and angle of is put in contact with another prism of

refractive index 1.6 when a ray of light is made incident on this combination normally then it

deviated. The angle of second prism

c) 40 d) 30 The refractive indices of material of a prism for blue and red colours are 1.532 and 1.514 respectively. Calculate angular dispersion produced by the prism

c) 0.1330 d) 1.1110 =1.5) is dipped in water (μ=4/3) as

shown in figure. A light ray is incident normally on the surface AB. It reaches the surface BC after T.I.R

b) 2/3 <sin θ<8/9

d) It is not possible A prism having an apex angle 40 and refraction index 1.5 is located in front of a vertical plane mirror as shown in figure. Through what total angle is the ray deviated after reflection from the mirror.

c) 1780 d) 20

The radius of a glass ball is 5cm. There is an air bubble at 1cm from the centre of the ball and refractive index of glass is 1.5. The position of image viewed from surface near the bubble is

b) 4.63 cm d) 5.12 cm

An image is formed on the screen by a convex lens. When upper half part lens is covered with

c) Intensity of image will be enhanced

A convex lens is made out of a substances of refractive index 1.2. The two surfaces of lens are convex. If this lens is placed in water whose refractive index is 1.33, it will behave as :

b) Divergent lens d) Like a prism

A convex lens when placed in the first position forms a real image of an object on a fixed screen. The distance between the object and the screen is 75 cm. On displacing the lens from first position by

25 cm to the seconds position .Again a real image is formed on the screen. Then the focal length of the lens is

a) 25.0 cm c) 50.3 cm

19. A convex lens of power 4D is kept iconcave lens of power 3D, the effective power of combination will be a) 7D c) 1D

20. The plane surface of a planoconvex lens is silvered , if radius of curved surface is R and refractive index is μ, then the systewhose radius will be

a) R

µ

c) µ −

21. In a compound microscope the objective and the eyepiece have focal lengths of 0.95cm and 5 cm respectively, and are kept at a distance of 20cm. The last image is formed at a distance of 25cm from the eyea) 94

22. A focal length 12 cm eyeWhat should be the separation of the two lenses when the virtual image of a distant object is formed at a distana) 7.2 cm

23. In Young’s double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths what minimum distance from the common cebright fringe on the screen 2 m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other?a) 4 mm

24. The refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The angle of minimum deviation is a) 90c) 180

25. A parallel beam of light of wavelength normally on a narrow slit. A diffraction pattern formed on a screen placed perpendicular to the direction of the incident beam. At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two edges oa) 2π

25 cm to the seconds position .Again a real image is formed on the screen. Then the focal length of the lens is

a) 25.0 cm b) 16.7cm c) 50.3 cm d) 33.3 cm A convex lens of power 4D is kept in contact with a concave lens of power 3D, the effective power of combination will be a) 7D b) 4D/3 c) 1D d) 3D /4 The plane surface of a planoconvex lens is silvered , if radius of curved surface is R and refractive index is μ, then the system behaves like a concave mirror whose radius will be

R

µ b) Rμ

1

R

µ − d) R(μ-1)

In a compound microscope the objective and the eyepiece have focal lengths of 0.95cm and 5 cm respectively, and are kept at a distance of 20cm. The last image is formed at a distance of 25cm from the eye-piece . Calculate the total magnification. a) 94 b) 84 c) 75 d) 88

Galilean telescope consists of an objective of focal length 12 cm eye-piece of focal length 4cm. What should be the separation of the two lenses when the virtual image of a distant object is formed at a distance of 24cm from the eye-piece? a) 7.2 cm b) 84 c) 75 d) 88 In Young’s double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths λ1 = 12000 Å and λ2 = 10000 Å. At what minimum distance from the common cebright fringe on the screen 2 m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other? a) 4 mm b) 3 m c) 8 mm d) 6 mmThe refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The angle of minimum deviation is a) 900 – A b) 1800+2A

1800–3A d) 1800−2A A parallel beam of light of wavelength λ is incident normally on a narrow slit. A diffraction pattern formed on a screen placed perpendicular to the direction of the incident beam. At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two edges of slit is

π b) 3π c) 4π d) π

25 cm to the seconds position .Again a real image is formed on the screen. Then the focal length of the

n contact with a concave lens of power 3D, the effective power of

The plane surface of a planoconvex lens is silvered , if radius of curved surface is R and refractive index is

m behaves like a concave mirror

In a compound microscope the objective and the eye-

respectively, and are kept at a distance of 20cm. The last image is formed at a distance of 25cm from

piece . Calculate the total magnification. d) 88

Galilean telescope consists of an objective of piece of focal length 4cm.

What should be the separation of the two lenses when the virtual image of a distant object is formed

d) 88 In Young’s double slit experiment, the slits are 2 mm apart and are illuminated by photons of two

= 10000 Å. At what minimum distance from the common central bright fringe on the screen 2 m from the slit will a bright fringe from one interference pattern coincide

d) 6 mm The refracting angle of a prism is A, and refractive index of the material of the prism is cot (A/2). The

is incident normally on a narrow slit. A diffraction pattern formed on a screen placed perpendicular to the direction of the incident beam. At the second minimum of the diffraction pattern, the phase difference between the rays coming from the two

πλ

26. Two slits in Young’s experiment have widths in the ratio 1 : 25. The ratio of intensity at the maxima and

minima in the interference pattern, max

min

I

I is

a) 49

121 b)

4

9 c)

9

4 d)

121

49

27. In a Young’s double slit experiment, Io is the intensity at the central maximum and β is the fringe width. The intensity at a point P distant x from the centre will be

a) o

πxI cos

β b) 2

o

πx4I cos

β

c) 2o

πxI cos

β d) 2oI πx

cos4 β

28. A beam of light consisting of two wavelengths 650 nm and 520 nm is used to illuminate the slit of a Young’s double slit experiment. Then the order of the bright fringe of the longer wavelength that coincide with a bright fringe of the shorter wavelength at the least distance from the central maximum is a) 1 b) 2 c) 3 d) 4

29. In Young’s double slit experiment the amplitudes of two sources are 3a and a respectively. The ratio of intensities of bright and dark fringes will be a) 3 : 1 b) 4 : 1 c) 2 : 1 d) 9 : 1

30. In a microscope, the focal lengths of two lenses are 1.2 cm and 6.25 cm. If an object is placed at 2 cm and the final image is formed at 25 cm from eye lens. The distance between the two lenses is a) 6.00 cm b) 8.00 cm c) 7.75 cm d) 9.25 cm

31. At which angle the intensity of transmitted light is maximum when a Polaroid sheet is rotated between two crossed polaroids? a) π/4 b) π/2 c) π/3 d) π

32. At what angle should an unpolarised beam to incident

on a crystal of refractive index µ = 3 , so that reflected beam is polarised? a) 45° b) 60° c) 0° d) 57°

33. The electric field associated with an electro magnetic wave in vacuum is given by

E = i 40 cos (kz – 6 × 108 t) , where E, z and t are in V m-1, meter and second respectively. The value of wave vector k is a) 2 m-1 b) 0.5 m-1 c) 6 m-1 d) 3 m-1

34. A charged particle with charge q enters a region of constant, uniform and mutually orthogonal fields E and B with a velocity v perpendicular to both E and B, and comes out without any change in magnitude or direction of v. Then, a) v = B ×××× E / B2 b) v = B ×××× E / B2 c) v = E ×××× B / E2 d) v = B ×××× E / E2

35. Arrange the following electromagnetic radiations in the order of increasing energy. I. Blue light II. Yellow light III. X – ray IV. Radio wave a) IV , II , I , III b) I , II , IV , III

c) III , I , II , IV d) II , I , IV , III 36. A deuteron is bombarded on 8O

16 nucleus and α – particle is emitted. The product nucleus is a) 7N

13 b) 5B10 c) 4Bc9 d) 7N

14 37. White light is incident on the interface of glass and

air as shown in the figure. If green light is just totally internally reflected then the emerging ray in air contains

a) Yellow, orange, red b) Violet, indigo, blue c) All colours d) All colours except green

38. A point object O is placed in front of a glass rod having spherical end of radius of curvature 30 cm. The image would be formed at

a) 30 cm left b) Infinity c) 1 cm to the right d) 18 cm to the left

39. The two coherent sources with intensity ratio β produce interference. The fringe visibility will be

a) 2

1

β

+ β b) 2β

c) ( )

2

1+ β d)

1

β

+ β

40. For what distance ray optics is good approximation when the aperture is 4 mm and the wavelength of light is 400 nm? a) 24 m b) 40 m c) 18 m d) 30 m

41. Assuming human pupil to have a radius of 0.25 cm and a comfortable viewing distance of 25 cm, the minimum separation between two objects that human eye can resolve at 500 nm wavelength is a) 100 µm b) 300 µm c) 1 µm d) 30 µm

42. The box of a pin hole camera, of length L, has a hole of radius a. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength λ the spread of the spot (obtained on the opposite wall of the camera) is the sum of its geometrical spread and the spread due to diffraction. The spot would then have its minimum size (say bmin) when:

a) 2 2

min

2a and b

λ λ= =

L L

b) 2

min

2a and b

λ= λ =

LL

c) min

a and b 4= λ = λL L

d) min

2

a and b 4= = λλ

LL

43. In a Young’s double slit experiment the intensity of light when slit is at distance

will be the intensity at the distance of slit is

a) 6

I b)

12

I

44. A 100 Ω resistance and a capacitor of 100 reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is

a) 2.2 A b) 11 A 45. Magnetic field in a plane electromagnetic wave is

given by

0ˆB B sin( t) jT= + ω

kx

Expression for corresponding electric field will be (Where c is speed of light.)

a) 0

ˆE B csin( t) V / m= − + ω

kx k

b) 0

ˆE B c sin( t) V / m= − ω

kx k

c) 0B

c

ˆE sin( t) V / m= − + ω

kx k

d) 0

ˆE B c sin( t) V / m= + ω

kx k

46. For the reaction, 2A + 3Bpresent in excess. When concentration of B is changed from 0.01 M to 0.04 M, rate is doubled. Thus, rate law is

a) 2 3dxk[A] [B]

dt=

b) dx

k[A][B]dt

=

c) 0dxk[A] [B]

dt=

d) 0 1/2dxk[A] [B]

dt=

47. The time for half – life period of a certain reaction, A

→ Produces is 1 h. When the initial concentration of the reactant A is 2.0 mol Lmuch time does it takes for its concentration to come from 0.50 to 0.25 mol Lreaction? a) 4 h c) 0.25 h

48. Time required for 99.9% completion of a first order reaction is nearly a) 10 times that required for 25% of the reaction b) 10 times that required for 50% of the reaction c) 20 times that required for 50% of the reactiond) 100 times that required for 90% of the reaction

49. The correct statement (s) pertaining to the adsorption of a gas on a solid surface is (are)(i) adsorption is always exothermic (ii) physisorption may transform into at high temperature

In a Young’s double slit experiment the intensity of light when slit is at distance λ from central is I. What

will be the intensity at the distance of slit is 6

λ?

c) 3

4I d)

8

I

resistance and a capacitor of 100 Ω reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is

c) 4.4 A d) 11 2 A Magnetic field in a plane electromagnetic wave is

Expression for corresponding electric field will be (Where c is speed of light.)

ˆE B csin( t) V / mkx k

E B csin( t) V / m

ˆE sin( t) V / mkx k

E B csin( t) V / m

For the reaction, 2A + 3B→ Product, A is present in excess. When concentration of B is changed from 0.01 M to 0.04 M, rate is doubled.

life period of a certain reaction, A

Produces is 1 h. When the initial concentration of the reactant A is 2.0 mol L-1, how much time does it takes for its concentration to come from 0.50 to 0.25 mol L-1, if it is a zero order

b) 0.5 h d) 1 h

Time required for 99.9% completion of a first order

a) 10 times that required for 25% of the reaction b) 10 times that required for 50% of the reaction

that required for 50% of the reaction d) 100 times that required for 90% of the reaction The correct statement (s) pertaining to the adsorption of a gas on a solid surface is (are) (i) adsorption is always exothermic (ii) physisorption may transform into chemisorption

(iii) physisorption increases with increasing temperature but chemisorption decreases with increasing temperature (iv) chemisorpiton is more exothermic than physisorption, however it is very slow due to higher energy of a) (i) and (iv) only c) (i), (ii) and (iv) only

50. 400 mL of standard gold sol is just prevented from coagulation by the addition of 0.96 g of starch before adding 1 mL of 10% NaCl solution, the gold number will be a) 2.4

51. Methylene blue in aqueous solution, is adsorbed oactivated charcoal at 25correct statement is a) The adsorption requires activation at 25b) The adsorption is accompanied by a decrease in enthalpy c) The adsorption increases with increase of temperature d) The adsorption

52. The reaction of tertmethoxide produces mainlya) isoc) tert

53. Arrange the following halides in the decreasing order of SN

CH3CH CH3CH a) I > II > IIIc) II > III > I

54. The major organic compound formed by the reaction of 1,1,1a) Acetylene c) 2

55. C– C – Cl bond in methyl chloride is a) longer and weaker c) shorter and stronger

56. Which of the following is fast de

57. Bromobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to yield a) phenol c) ethylbenzene

58. Among the electand NHSb2Sa) Nac) Al

(iii) physisorption increases with increasing temperature but chemisorption decreases with increasing temperature (iv) chemisorpiton is more exothermic than physisorption, however it is very slow due to higher energy of activation. a) (i) and (iv) only b) (ii) and (iii) only c) (i), (ii) and (iv) only d) All of these 400 mL of standard gold sol is just prevented from coagulation by the addition of 0.96 g of starch before adding 1 mL of 10% NaCl solution, the gold number will be a) 2.4 b) 76 c) 240 d) 24 Methylene blue in aqueous solution, is adsorbed oactivated charcoal at 25oC. For this process, the correct statement is a) The adsorption requires activation at 25oC b) The adsorption is accompanied by a decrease in enthalpy c) The adsorption increases with increase of temperature d) The adsorption is irreversible The reaction of tert- butyl bromide with sodium methoxide produces mainly- a) iso- butane b) iso – butylene c) tert – butyl methyl ether d) sodium tert butoxide Arrange the following halides in the decreasing order

N1 reactivity : CH2CH2Cl, CH2 =CHCH(Cl)CH I II CH2CH(Cl)CH3 III

a) I > II > III b) II > I > III c) II > III > I d) III > II > I The major organic compound formed by the reaction of 1,1,1- trichloroethane with silver powder is: a) Acetylene b) Ethene c) 2 – Butyne d) 2 – Butene

Cl bond of chlorobenzene in comparison to Cl bond in methyl chloride is

a) longer and weaker b) shorter and weakerc) shorter and stronger d) longer and stronger Which of the following is fast de- brominated?

Bromobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to yield a) phenol b) benzene c) ethylbenzene d) phenyl ether Among the electrolytes Na2SO4, CaCl2, Al2(SOand NH4Cl, the most effective coagulating agent for

S3 sol is a) Na2SO4 b) CaCl2 c) Al2(SO4)3 d) NH4Cl

(iii) physisorption increases with increasing temperature but chemisorption decreases with

(iv) chemisorpiton is more exothermic than physisorption, however it is very slow due to higher

b) (ii) and (iii) only

400 mL of standard gold sol is just prevented from coagulation by the addition of 0.96 g of starch before adding 1 mL of 10% NaCl solution, the gold number

Methylene blue in aqueous solution, is adsorbed on

C. For this process, the

b) The adsorption is accompanied by a decrease in

c) The adsorption increases with increase of

butyl bromide with sodium

d) sodium tert butoxide

Arrange the following halides in the decreasing order

=CHCH(Cl)CH3,

The major organic compound formed by the reaction

Cl bond of chlorobenzene in comparison to

b) shorter and weaker d) longer and stronger

Bromobenzene reacts with Mg in dry ether to give a compound (A) which further reacts with ethanol to

(SO4)3 Cl, the most effective coagulating agent for

59. The half – life period of a first order chemical reaction is 6.93 min. The time required for the completion of 99% of the chemical reaction will be (log 2 = 0.3010) a) 230.3 min b) 23.03 min c) 46.06 min d) 460.6 min

60. The rate law for a reaction between the substances A and B is given by rate = k[A]n[B]m If concentration of A is doubled and that of B is halved, the new rate as compared to the earlier rate would be

a) m n

1

2 + b) (m+n)

c) (n –m) d) 2(n-m)

61. For the reaction

2A + B → Product The half – life period was independent of concentration of B. On doubling the concentration A, rate increases two times. Thus, unit of rate constant for this reaction is a) L mol-1s-1 b) mol L -1s-1 c) unitless d) s-1

62. For a reaction

A → product t50 = 100 min at temperature T1 and t50 = 80 min at temperature T2 Thus, a) T1 >T2 and reaction is endothermic b) T2 >T1 and reaction exothermic c) T1 >T2 and reaction is exothermic d) T2 > T1 and reaction can be exothermic or endothermic

63. In the upper atmosphere, formation of H2O2takes place as

H2O + O → 2OH → H2O2 0 1H 72.0 kJ mol−∆ = ; Ea = 77.0 kJ mol-1

Ea for the bimolecular recombination of two OH radicals to form H2O and O is a) 149 kJ mol-1 b) – 149 kJ mol-1 c) 5 kJ mol-1 d) – 5 kJ mol-1

64. Following reaction takes place by mechanism:

NO2+ CO → NO + CO2

Step 1 : NO2 + NO2 1k .Slow→ NO3 + NO

Step II : NO3 + CO 2k .Fast→ NO2 + CO2

Hence, dx

dt

for the given reaction is

a) k1[NO2]2 – k2[NO3][CO]

b) k1[NO2]2 + k2[NO3][CO]

c) k1[NO2]2

d) k1[NO2] + k2[CO]

65. For the reaction , 2H2(g) +2NO(g) → N2(g) +2H2O (g)

Rate law is dx

dt

= k [NO]2[H2]

Mechanism is given by

Step 1 : 2NO N2O2

Step II : N2O2 + H2 → N2O + H2O

Step III: N2O + H2 → N2O + H2O Rate law is true, if a) step I is the slow step b) step II is the slow step c) step III is the slow step d) step I and step II are the slow steps

66. Which one of the following is not true? a) For first order reaction, straight -line graph of log C versus t is obtained, slope = - k/2.303 b) A plot of log k vs 1/T gives a straight – line graph for which slope = - Ea/2.303 R c) For third order reaction, the product of t1/2 and initial concentration (a) is constant. d) Units of k for the first order reaction are independent of concentration units

67. Consider the following statements

For a second order reaction: 2 A → P

1. [A] = 0

0

[A]

1 kt[A]+

2. A plot of 1/[A]2 vs time will be a straight line 3. Half – life is long when the concentration is low. Which of the above statements are correct? a) 1 and 2 b) 1 and 3 c) 2 and 3 d) 1,2 and 3

68. From the following data

H2 + I2 → 2HI T(K) 1/T(K-1) log k 769 1.3× 10-3 2.9 667 1.5× 10-3 1.1 Suggest which of the following is the correct activation energy for the reaction? a) 10 kcal /mol b) 20 kcal/mol c) 40 kcal/ mol d) 80 kcal/ mol

69. 50 mL of 1 M oxalic acid is shaken with 0.5 g wood charcoal. The final concentration of the solution after adsorption is 0.5 M. What is the amount of oxalic acid adsorbed per gram of carbon? a) 3.15 g b) 3.45 g c) 6.30 g d) 6.15 g

70. A first order reaction is 50% complete in 30 minutes at 27oC and in 10 minutes at 47oC. The reaction rate constant at 27oC and the energy of activation of the reaction are respectively a) k = 0.0231 min-1, Ea = 43.848 kJ mol-1 b) k = 0.017 min-1, Ea = 52.54 kJ mol-1 c) k = 0.0693 min-1, Ea = 43.848 kJ mol-1 d) k = 0.0231 min-1, Ea = 28.92 kJ mol-1

71. Which of the following are optimum conditions in case of van der Waal’s adsorption? a) High temperature, low pressure b) Low temperature, high pressure c) High temperature, high pressure d) Low temperature, low pressure

72. Select the correct statements. (i) Physical adsorption is weak, multilayer, non directional and non – specific (ii) Chemical adsorption is strong, unilayer, directional and strong (iii) Adsorption decreases with temperature (iv) chemical adsorption is more stronger than physical adsorption a) (i) and (iii) only c) (iii) only

73. Plot of log x/m against log p is a straight line inclined at an angle of 45o. When the pressure is 0.5 atm and Freundlich parameter, k is 10, the amount of solute adsorbed per gram of adsorbent will be (log 5 = 0.6990) a) 5 g b) 3 g c) 6 g

74. The volumes of gases Hadsorbed by 1 g of charcoal at 298 K are in the order a) H2 > CH4 > CO2 > NH3 b) CH4 > CO2 > NH3 > H2 c) CO2 > NH3 > H2 > CH4 d) NH3 > CO2 > CH4 > H2

75. Which of the following is not correct?a) In zeolite, all the four oxygen atoms (four corners)

of SiO 44

− tetrahedron are shared with other

tetrahedrons. b) It has 3 – dimensional structure c) It is aluminosilicate d) their size of pores varies from 260

76. A colloidal solution is subjected to an electric field. The particles move towards anode. The coagulation of same sol is studied using NaCl, BaClsolutions. Their coagulating power should be a) NaCl > BaCl2 >AlCl3 b) BaCl2 >AlCl3 >NaCl c) AlCl3 >BaCl2 >NaCl d) BaCl2 >NaCl >AlCl3

77. On adding AgNO3 solution to KI solution , a negatively charged colloidal sol will be formed in which of the following conditions?a)100 mL of 0.1 M AgNO3b)100 mL of 0.1 M AgNO3c)100 mL of 0.2 M AgNO3d)100 mL of 0.1 M AgNO3

78. Match the catalysts to the correct processes. Column 1

(catalyst ) Column II (process)

i. TiCl3 p Wacker’s processii PdCl2 q Ziegleriii

CuCl2 r Contact process

iv V2O5 s Deacon’s process i ii iii a) p q r b) q p s c) q r s d) r p q

79. A reddish brown sol is obtained by adding small quantity of FeCl3 solution to freshly prepared and well washed Fe(OH)3 ppt. Fixed layer and mobile layer are represented as

Select the correct statements. (i) Physical adsorption is weak, multilayer, non –

specific (ii) Chemical adsorption is strong, unilayer,

(iii) Adsorption decreases with temperature (iv) chemical adsorption is more stronger than

b) (i), (ii) and (iv) only d) All of these

against log p is a straight line inclined . When the pressure is 0.5 atm and

is 10, the amount of solute adsorbed per gram of adsorbent will be

c) 6 g d) 12 g The volumes of gases H2, CH4, CO2 and NH3 adsorbed by 1 g of charcoal at 298 K are in the order

Which of the following is not correct? a) In zeolite, all the four oxygen atoms (four corners)

tetrahedron are shared with other

dimensional structure

size of pores varies from 260 -740 nm A colloidal solution is subjected to an electric field. The particles move towards anode. The coagulation of same sol is studied using NaCl, BaCl2 and AlCl3 solutions. Their coagulating power should be

solution to KI solution , a negatively charged colloidal sol will be formed in which of the following conditions?

3+ 100 mL of 0.1 M KI 3+ 50 mL of 0.2 M KI 3+ 100 mL of 0.1 M KI 3+ 100 mL of 0.15 M KI

Match the catalysts to the correct processes. Column II (process)

Wacker’s process Ziegler-Natta polymerisation Contact process

Deacon’s process iv

s r p s

A reddish brown sol is obtained by adding small solution to freshly prepared and

ppt. Fixed layer and mobile

a) [Fe(OH)c) [FeCl

80. The total number of acyclic isomers including the stereoisomers with the molecular formula Ca) 11

81. In the following sequence of reactions

CH3CH

the compound D is a) propanal c) n-

82. Consider the reactions:

(i) (CH

(ii) (CH The mechanisms of reactions (i) and (ii) are respectively ;a) SN

c) SN

83. (CH3

B is a) (CHc) (CH

84. Identify the product of the following reaction

a) only ortho b) ortho c) ortho d) meta

85. Which one is most reactive towards Sa) C6

b) Cc) C6

d) C86. Predict the product, if any, for the following reaction

a) [Fe(OH)3]Fe3+: 3Cl- b) [Fe(OH)3]Fe3+: Clc) [FeCl3]Fe3+: OH- d) [FeCl3]Fe3+: 3OHThe total number of acyclic isomers including the stereoisomers with the molecular formula C4H7Cl is a) 11 b) 12 c) 9 d) 10 In the following sequence of reactions

CH2OH 2P I+→ A Mgether→ B HCHO→

C 2H O→ D the compound D is a) propanal b) butanal

- butyl alcohol d) n – propyl alcoholConsider the reactions:

(i) (CH3)2CH – CH2Br 2 5C H OH→ (CH3)2CH – CH2OC2H5+HBr

(ii) (CH3)2CH – CH2Br 2 5C H O−

→ (CH3)2CH – CH2OC2H5+Br

The mechanisms of reactions (i) and (ii) are respectively ;

N1 and SN2 b) SN1 and SN1 N2 and SN2 d) SN2 and SN1

3)3CCl NaCN→ A 2 4dil.H SO→ B. Compound B is a) (CH3)3CCOOH b) (CH3)3COH c) (CH3)3COC(CH3)3 d) All the three Identify the product of the following reaction

a) only ortho – methyl aniline b) ortho – methyl aniline and meta- methyl aniline c) ortho – methyl aniline and para – methyl aniline d) meta – and para – methyl aniline Which one is most reactive towards SN1 reaction?

6H5CH(C6H5)Br b) C6H5CH(CH3)Br

6H5C(CH3)(C6H5)Br d) C6H5CH2Br Predict the product, if any, for the following reaction

: Cl- : 3OH-

The total number of acyclic isomers including the Cl is

→

propyl alcohol

+HBr

+Br- The mechanisms of reactions (i) and (ii) are

B. Compound

methyl aniline methyl aniline

1 reaction?

Predict the product, if any, for the following reaction

87. The major product formed when 1,1,1propane is treated with aqueous potassium hydroxide is: a) Propyne c) 2 – Propanol

88. How many chiral compounds are possible on monochlorination of 2 – methyl butane?a) 8 b) 2 c) 4

89. 2 – chloro – 2 – methylpentane on reaction with sodium methoxide in methanol yields:

a) (iii) only c) All of these

90. Compound (A), C8H9Br, gives a yellow precipitate when warmed with alcoholic AgNO(A) gives an acid (B), Canhydride on heating. Identify the compound (A).

91. Which among the following part of neuron produces Neurotransmitters a) Synaptic Knob c) Nissil granules

92. Which is not true regarding Action Potential a) Na+ concentration is more in Axoplasm b) Extracellular fluid is negatively charged c) K+ concentration is more in Axoplasm than Nad) Axolemma becomes more permeable to Naoutside to inside

93. Electrical synapse is more faster because of a) Presence of myelin sheeth b) Absence of synaptic knob c) Absence of synaptic cleft d) Presence of Nodes of Ranvier

94. Which is not true regarding human neural system a) Cranial nerves are not always sensory b) All the spinal nerves are mixedc) Afferent nerves are sensory d) Efferent nerves carries impulses towards CNS

95. Synapse comprises a) Only synaptic cleft b) Pre synaptic membrane and synaptic cleft c) Post synaptic space and synaptic cleft d) Pre synaptic membrane, synaptic cleft and post synaptic membrane

The major product formed when 1,1,1- trichloro – propane is treated with aqueous potassium hydroxide

b) 1 – Propanol d) Propionic acid

chiral compounds are possible on methyl butane?

b) 2 c) 4 d) 6 methylpentane on reaction with

sodium methoxide in methanol yields:

b) (i) and (ii) d) (i) and (iii)

Br, gives a yellow precipitate when warmed with alcoholic AgNO3. Oxidation of (A) gives an acid (B), C8H6O4. (B) easily forms anhydride on heating. Identify the compound (A).

Which among the following part of neuron produces

b) Axon hillock d) Axonite

Which is not true regarding Action Potential concentration is more in Axoplasm

b) Extracellular fluid is negatively charged concentration is more in Axoplasm than Na+

d) Axolemma becomes more permeable to Na+ from

Electrical synapse is more faster because of a) Presence of myelin sheeth b) Absence of synaptic knob c) Absence of synaptic cleft

e of Nodes of Ranvier Which is not true regarding human neural system a) Cranial nerves are not always sensory b) All the spinal nerves are mixed c) Afferent nerves are sensory d) Efferent nerves carries impulses towards CNS

b) Pre synaptic membrane and synaptic cleft c) Post synaptic space and synaptic cleft d) Pre synaptic membrane, synaptic cleft and post

96. Find the mismatch a) Dura mater b) Arachnoid c) Pia mater d) Both b and c

97. Which is not applicable to Hypothalamus a) Lies at the upperpart of thalamus b) Controls body temperature c) Neuro shormone d) Centre of hunger and thirst

98. Find the odd one a) Cerebrum, Thalamus, Hypothalamus b)Cerebral hemisphere, Corpora quadrigemina, Cerebral aquaduct c) Pons, Medulla, Cerebellum d) Parital, temporal, occipital, Frontal

99. Which among the following is not a component of Reflex arc a) CNS c) Sensory nerve fibres

100. Which among the following is not a modification of choroid a) Cornea c) Ciliary body

101. Find the mismatch a) Blind spot b) Yellow spot c) Vitreous fluid d) Photoreceptors

102. Pupil of hua) Aperture present in lens b) Aperture produced by contraction of ciliary muscle c) Aperture surrounded by Iris d) More pigmented region of lens

103. Fovea of human eye a) Central pit of macula lutea b) Thinned c) Loosely packed cones are present d) All of these

104. Human Ear located near which cranial bone a) Occipitalc) Frontal

105. Cochlea of human ear is a) Responsible for hearing b) Coiled portion of labrynth c) Contain perilymph and Endolymphd) All of these

106. Which among the following is not a part of vestibular apparatus a) Macula c) Utricle

107. Perilymph is present in a) Scala vestibula c) Scala media

108. Find the mismatch a) Fore brain b) Ear c) Spinal cord d) Eye

Find the mismatch a) Dura mater --- Outer layer b) Arachnoid --- Middle, thick layer c) Pia mater --- Inner, contact with cranial bones d) Both b and c Which is not applicable to Hypothalamus a) Lies at the upperpart of thalamus b) Controls body temperature c) Neuro secretory cells secrete hypothalamic hormone d) Centre of hunger and thirst Find the odd one a) Cerebrum, Thalamus, Hypothalamus b)Cerebral hemisphere, Corpora quadrigemina, Cerebral aquaduct c) Pons, Medulla, Cerebellum d) Parital, temporal, occipital, Frontal Which among the following is not a component of Reflex arc a) CNS b) Receptors c) Sensory nerve fibres d) Cranium of brain Which among the following is not a modification of choroid a) Cornea b) Iris

Ciliary body d) Ciliary muscle Find the mismatch a) Blind spot ---- Optic nerves originates b) Yellow spot ---- More cone cells are present c) Vitreous fluid --- Provide nutrients d) Photoreceptors --- Contain Rods and cones Pupil of human eye is best described as a) Aperture present in lens b) Aperture produced by contraction of ciliary muscle c) Aperture surrounded by Iris d) More pigmented region of lens Fovea of human eye a) Central pit of macula lutea b) Thinned – out portion of choroid c) Loosely packed cones are present d) All of these Human Ear located near which cranial bone a) Occipital b) Temporal c) Frontal d) Sphenoid Cochlea of human ear is a) Responsible for hearing b) Coiled portion of labrynth

Contain perilymph and Endolymph d) All of these Which among the following is not a part of vestibular apparatus a) Macula b) Cristae c) Utricle d) Tectorial membrane Perilymph is present in a) Scala vestibula b) Scala tympani c) Scala media d) Both a and b Find the mismatch a) Fore brain -- Hippocampus b) Ear -- Macula c) Spinal cord -- Neurosecretory cells d) Eye -- Macula lutea

, thick layer Inner, contact with

ecretory cells secrete hypothalamic

b)Cerebral hemisphere, Corpora quadrigemina,

Which among the following is not a component of

d) Cranium of brain Which among the following is not a modification of

d) Ciliary muscle

More cone cells are present

b) Aperture produced by contraction of ciliary muscle

Which among the following is not a part of vestibular

d) Tectorial membrane

Neurosecretory cells

109. Find the false statement regarding sense organs a) Semicircular canal of ear consist of cristae responsible for balancing b) Utricle and saccule contain photoreceptors c) Cones and Rods are not evenly distributed in Retina d) Choroid is vascular and bluish in colour

110. Which is not applicable to Neural Signals a) Electrochemical signals known as impulse b) Fast and long lived c) Provide point to point rapid co-ordination d) Can transmit through neuron

111. Which of the following stimulates the synthesis and secretion of glucocorticoids a) LH b) FSH c) ACTH d) TSH

112. Somatostatin from the hypothalamus a) Inhibits release of growth hormone from pituitary b) Inhibits release of growth hormone from hypothalamus c) Increase release of growth hormone from pituitary d) Increase release of growth hormone from hypothalamus

113. Which of the following hormone is transported axonally to pituitary gland from hypothalamus a) MSH b) Oxytocin c) Vasopressin d) Both b & c

114. Which of the following is not related to glucocorticoids a) Stimulate proteolysis b) Inhibit utilization of aminoacids c) Stimulate cellular uptake of amino acids d) Suppresses the immune response

115. Which one exclusively comprises endocrine glands a) Pituitary, Salivary, Adrenals, Ovary, Testis b) Pituitary, Thyroid, Adrenals, Ovary, Testis c) Salivary, Thyroid, Adrenals, Ovary, Testis d) Adrenals, Ovary, Testis, Salivary, Liver

116. Which of the following hormones are known as catecholamines a) Adrenaline b) Epinephrine c) Noradrenaline d) All the above

117. Find the mismatched one a) Insulin - Peptide hormone b) Estradiol - Amino acid derivative c) Epinephrine - Steroid hormone d) Both b & c

118. Find the matched one a) Melatonin - Influences menstrual cycle b) Glucagon - Acts on hepatocytes c) Catecholamines - Piloerection d) All of these

119. Find the incorrect one a) Prolonged hyperglycemia leads to diabetes mellitus b) Aldosterone helps in the maintenance of body fluid volume c) Glucocorticoids stimulate proteolysis d) The adrenal gland is composed of three types of tissues

120. Prolonged hyper glycemia leads to a) Diabetes mellitus b) Diabetes insipidus c) Cretinisem d) Myxodema

121. Hormone that regulates blood calcium level is secreted by a) Thyroid b) Parathyroid c) Pituitary d) Pancreas

122. Milk ejection from the mammary gland is stimulated by a) Vasopressin b) Luteinizing hormones c) GH d) Oxytocin

123. Which is related to diuresis a) Oxytocin b) Vasopressin c) Thyroxine d) Melatonin

124. Choose the true statement about of Thyroid gland a) The thyroid gland is composed of two lobes which are located on either side of trachea b) Both the lobes are interconnected by a thin flap of connective tissue called isthmus c) The thyroid gland is composed of follicles and stromal tissues d) All are true

125. About ----- islets of Langerhan’s are present in normal human pancreas a) 1-2 billion b) 1-2 million c) 2-4 million d) 2-4 billion

126. Anterior lobe of pituitary secretes a) TSH, ADH and prolactin b) LH, FSH and a growth hormone c) ACTH, TSH and oxytocin d) STH, GH and antidiuretic hormone

127. Which is not a function of pineal gland a)Influences metabolism b) Help in maintaining the normal rhythm of sleep-wake cycle c) Influences defense capability d) None of these

128. One of the following is not considered as a compartment of cell with respect to movement of water a) Cell wall b) Protoplasm c) Vacuole d) Nucleus

129. Vacuole and protoplasm is separated by a) Cell membrane b) Plasma membrane c) Nuclear membrane d) Tonoplast

130. Solute potential is otherwise termed as a) Osmotic potential b) Pressure potential c) Hydrostatic potential d) Solution potential

131. Turgor pressure means a) Positive hydrostatic pressure b) The actual pressure exerted by the protoplasm against the cell walls c) The pressure exerted by the cell wall d) The pressure exerted by the nucleus e) a & b

132. In symplast pathway of water movement, the movement of water occurs through a) Tonoplast b) Plasmodesmata c) Cell wall d) Vacuole

133. The apoplastic water movement beyond the cortex is restricted by a) Casparian strips b) Pericycle c) Pith d) Vascular bundles

134. The pressure required to stop the movement of water completely is called a) Osmotic pressure b) Turgor pressure c) Matric potential d) Water potential

135. The pickled mango is shrunken, since the solution in which it is put is a) Hypertonic b) Diluted c) Hypotonic d) Isotonic

136. Cohesion tension theory of ascent of sap was given by a) Curtis b) Dixon and Jolly c) Kramer and Kozlowski d) None of the above

137. Greatest contribution of root pressure is a) Long distance conduction b) Provide water to tall plants c) Re – establish the broken chain of water in the xylem d) Guttation

138. Find the incorrect statements 1) In facilitated diffusion special proteins help move substances across membranes without expenditure of ATP energy 2) Facilitated diffusion can cause net transport of molecules from a low to high concentration 3) Diffusion is a slow process and is not dependent on a living system a) 2 only b) 3 only c) 2 & 3 d) 1 & 2

139. By convention, the water potential of pure water at standard temperatures, which is not under any pressure, is taken to be a) Infinity b) Zero c) One d) Both a & b

140. Osmosis is the movement of a) Solute particles from higher concentration to lower concentration b) Solvent particles from higher water potential to lower water potential c) Solute particles from higher concentration to lower concentration through a semipermeable membrane d) None of these

141. Evaporative loss of water from leaves is called a) Osmosis b) Transpiration c) Uniport d) Symport

142. Hydathodes occur on a) Stem b) Leaves c) Roots d) All the above

143. Which are correct for active transport 1) Requires special membrane proteins 2) Highly selective 3) Transport saturates 4) Uphill transport 5) Requires ATP energy a) 4 & 5 only b) 4 only c) 3, 4 & 5 only d) 1, 2, 3, 4 & 5

144. Attraction of water molecules to polar surfaces is known as a) Cohesion b) Capillarity c) Surface tension d) Adhesion

145. Which of the following statement is incorrect? a) Facilitated diffusion is very specific b) Porins are the protein that form small pores in the inner membrane of the plastids c) Water channels made up of eight different type of aquaporins d) All of these

146. Transpiration is affected by a) Temperature b) Humidity c) Canopy structure d) All of these

147. Which is common to active transport and facilitated transport a) Highly selective b) Transport saturates c) Sensitive to inhibitors d) All of these

148. Choose the wrong statement a) In antiport molecules moves in opposite direction b) In both uniport and antiport the transport proteins allow the diffusion only if two types of molecules move together c) In symport both molecules cross the membrane in same direction d) Both b & c

149. Choose the wrong statement a) Fixation of CO2 means oxidation of carbon dioxide b) Splitting of water molecules in the presence of light is called photolysis c) O2 released during photosynthesis comes from H2O d) Photosynthesis occurs particularly in specialized cells called mesophylls

150. The actual sites of photosynthesis is a) Green parts of plants b) Leaves c) Mesophyll cells d) Chloroplast

151. Number of pyrrole rings in the Chlorophyll molecule a)5 b) 3 c) 6 d) 4

152. Reaction centre of photosystem is a) Chl.a b) Chl.b c) Chl.c d) Carotenoids

153. The light driven reaction of photosynthesis was first formulated by a) Von Helmont b) Stephen Hales c) Priestly d) Robert Hill

154. Which pigment system involved in cyclic photophosphorylation a) Carotene b) Chl 650 c) P(680) d) P(700)

155. Choose the correct statement a) Non cyclic photophosphorylation includes P 680 and P 700 b) Photolysis of water takes place in photosystem II c) Light depended formulation of ATP is known as photophosphorylation d) All correct

156. Non cyclic photophosphorylation can be changed into cyclic by a) Change the concentration of Antenna molecules b) Change the wavelength of light c) Change the concentration of O2 d) Change the concentration of water

157. How many are incorrect A) Plants that are adapted to dry tropical regions have the C4 pathway B) C4 plants have a special type of leaf anatomy C) The particularly small cells around the vascular bundles of the C3 pathway plants are called bundle sheath cells D) ‘Kranz’ means ‘wreath’ and is a reflection of the arrangement of cells a) One b) Two c) Three d)Four

158. Scientist who showed sunlight is essential to plant processes a) Joseph Priestley b) Cornelius Van Neil c) T.W. Engelmann d) Jan Ingenhousz

159. In chromatogram Chl-b appear as a) Yellow b) Yellow-orange c) Yellow green d) Blue green

160. Choose the correct one a) ATP ase enzyme has two parts b) F0 is embedded in the membrane and F1 protrudes on the outer surface of the thylakoid membrane c) F0 carries out facilitated diffusion of protons across the membrane d) All of these

161. The enzyme which catalyse the carboxylation step in Calvin cycle is a) RuBisCo b) PEP carboxylase c) Malonate d) Both a & b

162. A process that makes important difference between C3 and C4 plant is a) Transpiration b) Glycolysis c) Photosynthesis d) Photorespiration

163. Which of the following is a factor influencing photosynthesis? a) CO2 b) Light c) Chlorophyll d) All of these

164. How many of the following are involved in anion cation balance in cells Nitrogen Potassium Calcium Molybdenum Manganese Chlorine a) One b) Two c) Three d) Four

165. Select the match ones I) Nitrosomonas - Nitrite to nitrate II) Thiobacillus - Denitrification III) Nostoc - Free living nitrogen fixer IV) Azotobacter - Anaerobic nitrogen fixer a) I & II only b) III & IV only c) II & III only d) II & IV only

166. Choose correct statement? a) Phosphorous is absorbed by the plants from the

soil in the form of 2 4H PO− or HPO4

2-

b) Phosphorous is required for all phosphorylation reactions c) Sulphur is a constituent of cysteine and methionine d) All of these

167. Which of the following elements have role in cell membrane functioning a) Calcium b) Potassium c) Phosphorous d) Sulphur

168. Choose the correct statement a) N, P, K are example for macronutrients b) C, H and O are mainly obtained from CO2 and H2O c) Micronutrients are known as trace elements d) All of these

169. N ≡ N →X NH3. Here X is ------ a) Nitrogenase b) Carbonic anhydrase c) Trans aminase d) Transiminase

170. Which of the following essential element is an activator of nitrogenase during nitrogen metabolism? a) Mo b) Zn2+

c) Mg2+ d) C 171. The micronutrients include

a) Fe, Mo b) Cu, Mo c) Zn, B d) All of these

172. Select the correct option A) Magnesium is involved in the normal functioning of cell membrane B) Magnesium activates enzymes of nitrogen metabolism C) Plants obtain sulphur in the form of sulphite D) Carbon is a micronutrient a) A, B true; C & D false b) A, C true; B & D false c) A, B, C true; D false d) All are incorrect

173. The technique of growing plants in a nutrient solution is known as a) Aqua culture b) Blue revolution c) Hydroponics d) Both a & c

174. Which of the following is wrongly matched Minerals Functions a) Nitrogen – Required by metabolically active cells b) Phosphorus – Found in all nucleic acid c) Potassium – Activation of enzymes d) Magnesium – Cell elongation

175. Find the correct option A) Deficiency of nitrogen, potassium and magnesium are visible first in the senescent leaves B) Deficiency of Mg causes chlorosis in plants C) Deficiency of Mo can cause chlorosis, inhibition of cell division and delay flowering D) Manganese inhibit calcium translocation in shoot apex a) Only A & C b) Only A, B & C c) Only B, C & D d) All are correct

176. Which of the following is needed in the synthesis of auxin

a) Manganese b) Copper c) Zinc d) Molybdenum

177. Find the mismatched one a) Phosphorous – Helps in water splitting reactions b) Boron – Cell elongation c) Nitrogen – Required by meristematic tissues d) Potassium – Activation of enzymes

178. Necrosis is due to the deficiency of a) Ca, Cu, Mg, K b) S,N, Mo c) S, K, Mo, N d) Mg, Mn, Mo, S, K, Fe, Zn, N

179. A sulphur containing amino acid is a) Methionine b) Asparagine c) Serine d) Proline

180. Which of the following is not a function of boron? a) Carbohydrate translocation b) Cell elongation and cell differentiation c) Uptake and utilization of Ca2+ d) None of these

NNEEEETT MMOODDEELL EENNTTRRAANNCCEE EEXXAAMM RREEPPEEAATTEERRSS –– MMEEDDIICCAALL ((MMOODDUULLEE –– II))

VERSION CODE – A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

B A A A D B D B B B B A A C C

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

B B B C C D D D D C C C D A B

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

A B A A A D A A A B D C C A D

46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

D C B C D B B C C C C B C C D

61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

A D C C B C B C A A B B A D D

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90

C D B A B D A B B C A D C C D

91 92 93 94 95 96 97 98 99 100 101 102 103 104 105

C C C D D D A B D A C C A B D

106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

D D C B B C A D C B D D D D A

121 122 123 124 125 126 127 128 129 130 131 132 133 134 135

A D B D B B D D D A E B A A A

136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

B C A B B B B D D B D D B A D

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165

D A D D D B A D C D A D D B C

166 167 168 169 170 171 172 173 174 175 176 177 178 179 180

D A D A A D D C D D C A A A D

VERSION CODE – B

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

A A A D D B B B B A A C B B B

16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

C D D C C D A B A B A A A A A

31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

A D C C A D B B C C D C D D B

46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

A A A D D B C D C C C C D C D

61 62 63 64 65 66 67 68 69 70 71 72 73 74 75

C C C D B C A D C B D B C B B

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90

C C C A B B A B D C B B A B D

91 92 93 94 95 96 97 98 99 100 101 102 103 104 105

D D D B A D A D D C D A A D A

106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

D A D D B B A D B B B A B B D

121 122 123 124 125 126 127 128 129 130 131 132 133 134 135

B A A D C A A D B D D D D C D

136 137 138 139 140 141 142 143 144 145 146 147 148 149 150

D B D A C C A C C C D A B D B

151 152 153 154 155 156 157 158 159 160 161 162 163 164 165

B C A B D D D D D A E A B C B

166 167 168 169 170 171 172 173 174 175 176 177 178 179 180

B D D D D D A C D C D A D C A

0033..0033..1199

AANNSSWWEERRSS && SSOOLLUUTTIIOONNSS First No: Version code: A Second No: Version code: B 23. 41

24. 18

25. 19

26. 42

27. 20

28. 21

39. 31

40. 45

41. 32

42. 34

43. 33

44. 35

45. 36

46. 71

47. 62

48. 74

50. 60

51. 70

52. 75

53. 63

54. 76

55. 61 Due to resonance in chlorobenzene 56. 77

57. 72

58. 59

59. 78

60. 64

61. 79

62. 58

63. 69

64. 56

65. 80

66. 55

67. 81

68. 57

69. 82

70. 46

71. 83

72. 65

73. 47

74. 84

75. 68

76. 85

78. 86

79. 67

80. 87

81. 49

82. 88

83. 51

84. 89

85. 54

SN1 reactions involve the formation of carbocations, hence higher the stability of carbocation, more will be reactivity of the parent alkyl halide. Thus tertiary carbocation formed from (c) is stabilized by two phenyl groups and one methyl group, hence most stable.

86. 48

87. 90

88. 52

90. 50