type : jee main 2015-16 test-1/class 12 th /set-q q
TRANSCRIPT
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 1 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
III-A/172 , Nehru Nagar Ghaziabad. Ph : 9811212090, 9868502091. email : [email protected], website : www.bmcchemistry.com
Type : JEE MAIN 2015-16
TEST-1/Class 12th
/Set-Q
Topic : SOLID STATE, LIQUID SOLUTION
Date : 3
rd MAY 2015
Max Marks : 120 Time : 45 minutes
Single Correct Answer Type (+4/-1) Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct.
1. Which of the following give colour to LiCl crystal
(a) Frankel defect (b) Schottky defect (c) F centre (d) Mg++
impurity
2. In which case the observed value of magnetic moment is zero while expected value of very higher
(a) Ferrimagnetic (b) Ferromagnetic (c) Diamagnetic (d) Antiferromagnetic
3. The vapour pressure of 2 molal solution of urea at 373 K would be equal to
(a) 1 atm (b) 0.982 atm (c) 1.03 atm (d) 0.964 atm
4. Which of the following solution has highest value of vapour pressure at 300 K
(a) 1% Urea solution (b) 1% sugar solution
(c) 2% Urea solution (d) 5% sugar (cane sugar) solution
5. Which of the following is least soluble in n-octane solvent
(a) C2H5OH (b) Acetonitrile (c) n-Hexane (d) Acetone
6. The curves AB and CD are plotted for vapour pressures of two liquids against temperature in Kelvin.
These curves indicate that :
(a) AB is for solution and CD for the pure solvent
(b) AB is for pure solvent and CD for the solution
(c) AB and CD are both for the same solution
(d) AB and CD are both for the same solvent
CODE
Q
INSTRUCTIONS
General Instructions
1. Ensure matching of OMR sheet code with the Question paper Code before you
start marking your answers on OMR sheet
2. On the answer sheet, darken the appropriate bubble with Blue/Black Pen only.
Use of pencil and any other ink strictly prohibited.
3. Any kind of cutting, rubbing or use of whitener not allowed on answer sheet.
Roll No.
Name of the student
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 2 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
7. Solubility of N2 gas in water follows Henry’s Law. When the solubitly is plotted against partial pressure
at a definite temperature we get following plots:
Which one for temperature is correct?
(a) T1 = T2 = T3 = T4
(b) T1 > T2 > T3 > T4
(c) T1 < T2 < T3 < T4
(d) T1 > T2 > T3 < T4
8. In a binary solution of two volatile liquid shown in graph. The ratio of mole fractions of A to B in
vapour phase of an equimolar solution of two would be
250
200
150
V.P 100
(mmHg) 50
XB = 1 XA = 1
Mole fraction
(a) 3
4 (b)
4
3 (c)
2
1 (d) 3
1
9. A compound ‘AB’ has rock salt structure. If all the atoms present in one of the axes passes through two
opposite edge centres are removed than formula of resulting crystal is –
(a) AB (b) A3B4 (c) A4B3 (d) A8B5
10. Which of the following is a molecular solid
(a) silicon (b) graphite (c) phosphorus (d) diamond
11. An element ‘A’ (atomic mass = 50 gm/mol) crystallises in ABCABCABC like packing. If radius of ‘A’
atom is 200 Pm. The density of crystal is –
(a) 1.45 gm/cm3 (b) 1.83 gm/cm
3 (c) 2.77 gm/cm (d) 2.5 gm/cm
3
12. If in one mol of NaCl crystal all the sodium ions at body centre are replaced by Mg++
. Number of cation
vacancies formed are
(a) 1.504 × 1023
(b) 7.52 × 1022
(c) 3.01 × 1022
(d) 3.01 × 1023
13. The Henery law constant (in kilo pascal) of four gases A, B, C & D at 300 K are 1.78, 2.54, 0.72 and
0.56 respectively. The solubility of these gases in water at 1 atm pressure follow the order
(a) D < B < A < C (b) B < C < A < D (c) B < A < C < D (d) C < A < B < D
14. Which of the following is correct set for a solution of CHCl3 in CH3COCH3
(a) ∆H, ∆V and ∆S all –ve (b) ∆H, ∆V and ∆S all +ve
(c) ∆H = +ve, ∆V = +ve, ∆S = –ve (d) ∆H = –ve, ∆V = –ve, ∆S = +ve
15. Compound ‘AB’ has zinc blende structure in which ‘B’ are in tetrahedral voids. 1 5
In the adjoining figure the ion ‘B’ shown
by ‘ ’ is in touch of four spheres. 4
The sphere number ------- is not
touching ion ‘B’ 2
(a) 3 (b) 2
(c) 4 (d) 5 3
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 3 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
16. An organic compound ‘A’ has molecular formula C6H12O form two volatile liquids A & B which are
enantiomers of each other (optical isomers). At 300 K vapour pressure of pure A and pure ‘B’ are
100 and 80 mmHg respectively. If A & B on mixing form ideal solution than correct statement (s) is/are
(I) ‘A’ has lower boiling point than ‘B’
(II) A solution obtained by dissolving equal masses of ‘A’ and ‘B’ has vapour pressure = 90 mmHg
(III) Intermolecular forces in ‘A’ are lesser than ‘B’.
(a) I only (b) II only (c) II & III (d) I, II & III all
17. Total number of tetrahedral voids in 12 gm of magnesium crystal, ‘Mg’ crystallises in H.C.P structure.
(Mg = 24 u)
(a) 3.01 × 1023
(b) 6.02 × 1023
(c) 1.5 × 1023
(d) 1.2 × 1024
18. Packing efficiency in the two dimensional plane shown in figure (approx)
(a) 52 % (b) 74 %
(c) 68 % (d) 78 %
19. Why is graphite used as a dry lubricant in machinery?
(a) Each carbon atom undergoes sp3 hybridization in graphite
(b) Graphite has layered structure and it cleaves easily between the layers and therefore it is very soft
and slippery
(c) Graphite is a non-conductor of electricity
(d) Graphite has two sigma bonds and two pi bonds
20. From the given graph for an ideal binary solution of two volatile liquids A & B, the vapour pressure of
B when mole fraction of B in vapour phase will become 2
1 .
(a) 222.22 mmHg
(b) 333.33 mmHg
(c) 444.44 mmHg
(d) Condition is not possible
XA= 1 XA= 0
XB=0 XB= 1 21. Highest coordination number for an cation is found in
(a) ZnS structure (b) Rock salt structure
(c) Flourite structure (d) Anti fluorite structure
22. Non stoichiometric cuprous oxide is a ‘p’ type semiconductor. The formula of one of such oxide was
found to be Cu1.95O. The percentage of Cu++
ion in this oxide is
(a) %19
100 (b) %
5.19
100 (c) %
5.19
500 (d) %
195
500
23. The closest distance between two atoms in a crystal having F.C.C structure is 460 p.m. The radius of
octahedral void is –
(a) 51.75 pm (b) 95.22 Pm (c) 190.44 pm (d) 103.5 Pm
24. In ABCABC like packing if one unit cell contain 2 atoms of ‘A’ layer than number of atoms from ‘B’
layer are –
(a) 6 (b) 7 (c) 8 (d) 2
25. Weight of ethylene glycol (M. Wt. = 62) which should be added in 5 kg of water in a car radiator so that
car can be parked at a temperature of –3°C. (kf of H2O = 1.86)
(a) 250 gm (b) 500 gm (c) 750 gm (d) 1000 gm
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 4 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
26. In NaCl ideal lattice the schottky defect is very common. In a NaCl crystal 16.67 % of edge centers and
16.67 % face centers are empty due to schottky defect. The ratio of pyknometric density to ‘X’ ray
density of crystal is –
(a) 3
4 (b)
4
3 (c)
8
7 (d)
7
8
27. Volume in liters of 0.03 M HCl which should be used to completely neutralize 19 gm of equimolar
mixture of Na2CO3 & NaHCO3.
(a) 5 (b) 10 (c) 6 (d) 3
28. Equimolar gaseous mixture
having O2 , CO2 and N2 at PTotal = 12 Bar
10 lit water
300 K temperature
At 300 K KH O2 = 45 K Bar
KH N2 = 90 K Bar
KH CO2 = 1.5 K Bar
At equilibrium approximately 2.67 × 10–x
mols of CO2 are soluble in water , value of ‘x’ is –
(a) 1 (b) 2 (c) 3 (d) 4
29. Solid CO2 is commonly called as dry ice, it is a molecular solid in which CO2 molecules crystallises in
ABABAB like packing. The closest distance between two CO2 molecules of two ‘A’ layers shown in
figure
A ⇒ Ist ‘A’ layer
B
A ⇒ IInd ‘A’ layer
Diameter of CO2 molecule is 400 Pm
(a) 653 Pm (b) 1306 Pm (c) 400 Pm (d) 1008 Pm
30. An element ‘M’ (atomic mass = 100) crystallises in F.C.C unit cell. During crystallisation 2
1 of
tetrahedral voids were occupied by another metal ‘N’ (atomic mass = 20). If volume of unit cell is
6.0 × 10–23
cm3. The density of crystal is –
(a) 49 gm/cm3 (b) 13.3 gm/cm
3 (c) 53.3 gm/cm
3 (d) 12.2 gm/cm
3
Space for rough work Space for rough work Space for rough work Space for rough work
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 5 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
III-A/172 , Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email : [email protected] , website : www.bmcchemistry.com
Type : JEE MAIN 2015-16
TEST-1/Class 12th
/Set-Q
Topic : SOLID STATE, LIQUID SOLUTION
Date : 3rd
MAY 2015
Max Marks : 120 Time : 45 minutes
Note : Write your name and roll no. above in box before filling the answers.
Use only blue/black ball pen, use of pencil is strictly prohibited. Straight Objective Type (+4/-1)
A B C D A B C D A B C D
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8 18 28 Bonus
9 19 29
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CODE
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Roll No.
Name of the student
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 6 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com
Test-1/SS,LS/Set-Q Mittal Sir
BMC CLASSES Page No - 7 III-A/172, Nehru Nagar Ghaziabad. Ph : 0120-4102287, 9811212090 email: [email protected] web: www.bmcchemistry.com