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1

AIEEE 2012

MCQ (Single Correct Answer)

+4

-1

The pH of a 0.1 molar solution of the acid HQ is 3. The value of the ionization constant, K_a of this acid is :

A

3 $$\times$$ 10^–1

B

1 $$\times$$ 10^–3

C

1 $$\times$$ 10^–5

D

1 $$\times$$ 10^–7

2

AIEEE 2012

MCQ (Single Correct Answer)

+4

-1

The incorrect expression among the following is :

A

$${{\Delta {G_{system}}} \over {\Delta {S_{total}}}} = - T$$

B

In isothermal process $${w_{reversible}}$$ = $$ - nRT\,\ln \,{{{V_f}} \over {{V_i}}}$$

C

In $$K\, = {{\Delta {H^o} - T\Delta {S^o}} \over {RT}}$$

D

$$K\, = \,{e^{ - \Delta {G^o}/RT}}$$

3

AIEEE 2012

MCQ (Single Correct Answer)

+4

-1

The standard reduction potentials for Zn²⁺/ Zn, Ni²⁺/ Ni, and Fe²⁺/ Fe are –0.76, –0.23 and –0.44 V respectively. The reaction

X + Y²⁺ $$\to$$ X²⁺ + Y will be spontaneous when :

A

X = Ni, Y = Fe

B

X = Ni, Y = Zn

C

X = Fe, Y = Zn

D

X = Zn, Y = Ni

4

AIEEE 2012

MCQ (Single Correct Answer)

+4

-1

Which one of the following statements is correct ?

A

All amino acids except lysine are optically active

B

All amino acids are optically active

C

All amino acids except glycine are optically active

D

All amino acids except glutamic acid are optically active

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