amu - chemistry - 2007
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AMU –PAST PAPERS
CHEMISTRY- UNSOLVED PAPER - 2007
SECTION – I
Single Correct Answer Type There are five parts in this question. Four choices are given for each part and one of them is
correct. Indicate you choice of the correct answer for each part in your answer-book by
writing the letter (a), (b), (c) or (d) whichever is appropriate
01Sn4+ + 3e- Sn2+ Eo = 0.13V
Br2 + 2e- 2Br- Eo = 1.08 V
Calculate Kep for the cell reaction for the cell formed by two electrodes
1041
1032
10-32
10-42
Problem
02Consider the reaction
Give the equilibrium constant for the formation of N2O4 from N2 and O2
a.
b.
c.
d.
Problem
221
1 1KK
1 2
1K K
1 2
1K K
2
1
K
K
Problem03Half-life of radioactive element is 16 h. What time it will take for 75%
disintegration ?
a. 32 days
b. 32 h
c. 48 h
d. 16 h
Problem04Friedel – Craft acylation can be given by
a.
b.
c.
d. R – O - R
Problem05Which of the following is having maximum acidic strength ?
a.
b.
c.
d.
Problem06For the reaction Na2CO3 + 2HCl NaCl + H2O + CO2
Equivalent weight of Na2CO3 is :
a. M/2
b. M
c. 2M
d. M/4
Problem07Excited state configuration of Mn2+ is
a.
b.
c.
d.
42gt
3 22g gt e
4 22g gt e
5 02g gt e
Problem08Which of the following is thermosetting polymer ?
a. Nylon-6
b. Bakelite
c. Nylon-66
d. SBR
Problem09 Yellow or white ppt. Which of the following cannot be X ?
a.
b. (CH3) CHCl
c.
d.
3
3
AgNOHNOX
Problem10Rate of a reaction can be expressed by following rate expression
Rate=k[A]2 [B], if concentration of A is increased by 3 times, and concentration
of B increased by 2 times, how many times rate of reaction increases?
a. 9 times
b. 27 times
c. 18 times
d. 8 times
Problem11What is the reason for unusual high b.p of water?
a. Due to the presence H+ and OH- ions in water
b. Due to dipole-dipole interactions
c. Due to London forces
d. Strong London forces
Problem12Shine at freshly cut sodium is because of
a. Due to oscillation of free electrons
b. Due to weak metallic bonding
c. Due to by absorption of light in crystal lattice
d. Due to pressure of free valency at the surface
Problem13Most acidic oxide among the following is
a. Cl2O5
b. Cl2O
c. Cl2O3
d. Cl2O7
Problem14.
a.
b.
c.
d.
Problem15Which of the following statements is wrong?
a. Metals are more then non metals
b. There are only few metalloids
c. Hydrogen can be placed with alkali metals as well as with halogen in periodic
table
d. Non metals are more than metals
Problem16What volume of M/10 NaOH added in 50 mL, M/10 acetic solution to get a
buffer solution having highest buffer capacity?
a. 50mL
b. 25mL:
c. 10mL
d. 40mL
Problem17Monomers of nucleic acid is
a. Nucleotides
b. Nucleoxides
c. Aminoacids
d. Carboxylic acid
Problem18If the volume containing gas is compressed to half, how many moles gas
remained in the vessel?
a. Just double
b. Just half
c. Same
d. More than double
Problem19At same temperature calculate the ratio of average velocity of SO2 to CH4
a. 2:3
b. 3:4
c. 1:2
d. 1:6
Problem20If temperature of 1 mole of gas is increased by 500C, calculate the change in
kinetic energy of the system
a. 623.25J
b. 6.235J
c. 623.5J
d. 6235.0J
Problem21Give name of the complex, name should specify the position of ligands.
a. Bistransphosphinecarbonylchloroiridium [II]
b. carbonylchlrobistransphosphineridium [III]
c. carbonylchlrobistrasphosphineridium [I]
d. chiorocarbonylbistranssphosphineriridium [I]
Problem22Ozonolysis products of an olefin are and Olefin is
a.
b.
c.
d.
Problem23A bubble of volume V1 is in the bottom of a pond at 150C and 1.5 atm pressure
of 1atm
At 250C and have volume V2, give
a. 15.5
b. 0.155
c. 155.0
d. 1.55
2
1
V
V
Problem24Volume of 0.6M NaOH required to neutralize 30 cm3 of 0.4 M HCL is
a. 20 cm3
b. 40 cm3
c. 45 cm3
d. 30 cm3
Problem25The orbital angular momentum of an electron in 3 s orbital is
a.
b.
c.
d. zero
1.
2 2h
2h
1.
3 2h
Problem26Decomposition of H2O2 is prevented by
a. KOH
b. MnO2
c. Acetanilide
d. Oxalic acid
Problem27The bad smelling substance formed by the action of alcoholic caustic potash on
chloroform and aniline is
a. Nitrobenzene
b. Phenyl isocynaide
c. Phenyl cyanide
d. Phenyl isocyanide
Problem28What is the EAN of nickel in Ni(CO)4 ?
a. 38
b. 30
c. 36
d. 32
Problem29P4 + 3NaOH + 3H2O A + 3NaH2PO2 here A is
a. NH3
b. PH3
c. H3PO4
d. H3PO3
Problem30If solubility of calcium hydroxide is , then its solubility product will be
a. 27
b. 3
c. 9
d. 3
Problem31Which of the following compounds is optically active ?
a. (CH3)2CHCH2OH
b. CH3CH2OH
c. CCL2F2
d. CH3CHOHC2H5
Problem32Which compound is soluble in water ?
a. CS2
b. C2H5OH
c. CCL4
d. CHCL3
Problem33In a cubic structure of diamond which is made from X and Y, where X are at the
corners of the cube and Y at the face cehters of the cube. The molecular formula
of the compound is
a. X2Y
b. X3Y
c. XY2
d. XY3
Problem34Bithonal is an example of
a. Disinfectant
b. Antiseptic
c. Antibiotic
d. Analgesic
Problem35 A and B in the following reactions are
a.
b.
c.
d. A + RR’CH2CN,B=NaOH
Problem36Structure of XeF5
+ ion is
a. Trigonal bipyramidal
b. Square pyramidal
c. Octahedral
d. Pentagonal
Problem37Mark out the most unlike form of polymerization of CH2
a.
b.
c.
d.
Problem38
a.
b.
c.
d. No reaction
3 2HBrR N CH CH
Å
- = ¾¾®
3 3
Br
R N CH CHÅ
- -
3 2 2R N CH CH BrÅ
- - -
2 3CH CH N R B rÅ
= -e
Problem39Markout the enthalpy of formation of carbon monoxide (CO)
Given, C(s)+O2(g) CO(g) = - 393.3 kJ/mol
CO(g) + O2(g) CO2(g) = - 282.8 kJ/mol
a. 110.5 kJ/mol
b. 676.1 kJ/mol
c. 282.8 kJ/mol
d. 300.0 kJ/mol
12
H
H
Problem40The magnetic moment of a transition metal ion is 3,87 BM. The number of
unpaired Electrons present in it is
a. 2
b. 3
c. 4
d. 5
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