AIEEE Chemistry (2005)

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AIEEE Chemistry (2005)

Created by Quizmagic Team on Jan 09, 2013 06:42 PM

There are 25 questions of AIEEE Chemistry examination of year 2005 in this quiz. Take this quiz with previous year questions and improve your Chemistry for this competitive examination

Top 5 Scores

	Anonymous	84 03:17
	Anonymous	36 01:04
	Anonymous	36 07:12
	Anonymous	33 00:47
	Anonymous	33 01:33

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Sample Questions

Question 1

Among the following acids which has the lowest pK_avalue?

CH₃COOH
(CH₃)₂COOH
HCOOH
CH₃CH₂COOH

Question 2

An amount of solid NH₄HS is placed in a flask already containing ammonia gas at acertain temperature and 0.50 atm. Pressure. Ammonium hydrogen sulphidede composes to yield NH₃and H₂S gases in the flask. When the decomposition reaction reaches equilibrium, the total pressure in the flask rises to 0.84 atm. Theequilibrium constant for NH₄HS decomposition at this temperature is

0.17
0.3
0.11
0.18

Question 3

t₁_/₄can be taken as the time taken for the concentration of a reactant to drop to 3/4 of its initial value. If the rate constant for a first order reaction is K, the t₁_/₄can bewritten as

0.75/K
0.69/K
0.10/K
0.29/K

Question 4

An organic compound having molecular mass 60 is found to contain C = 20%, H =6.67% and N = 46.67% while rest is oxygen. On heating it gives NH₃alongwith a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. The compound is

CH₃CH₂CONH₂
CH₃CONH₂
CH₃NCO
(NH₂)₂CO

Question 5

Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of an acid forms a compound if water during the reaction is continuously removed. Thecompound formed is generally known as

a Schiff’s base
an amine
an enamine
an imine

Question 6

Which of the following factors may be regarded as the main cause of lanthanidecontraction?

Poor shielding of one of 4f electron by another in the subshell
Greater shielding of 5d electrons by 4f electrons
Effective shielding of one of 4f electrons by another in the subshell
Poorer shielding of 5d electrons by 4f electrons

Question 7

The value of the ‘spin only’ magnetic moment for one of the following configurationsis 2.84 BM. The correct one is

d⁴(in strong ligand filed)
d⁴(in weak ligand field)
d⁵(in strong ligand field)
d³(in weak as well as in strong fields)

Question 8

The structure of diborane (B₂H₆) contains

four 2c-2e bonds and four 3c-2e bonds
two 2c-2e bonds and four 3c-2e bonds
four 2c-2e bonds and two 3c-2e bonds
two 2c-2e bonds and two 3c-3e bonds

Question 9

Which of the following statements in relation to the hydrogen atom is correct?

3s and 3p orbitals are of lower energy than 3d orbital
3p orbital is lower in energy than 3d orbital
3s, 3p and 3d orbitals all have the same energy
3s orbital is lower in energy than 3p orbital

Question 10

Equimolar solutions in the same solvent have

Same boiling point but different freezing point
Same boiling and same freezing points
Different boiling and different freezing points
Same freezing point but different boiling point

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