In the Ellingham diagram, for the formation of carbon monoxide________.

(a)

\(\left( \cfrac { \Delta { S }^{ 0 } }{ \Delta T } \right) \) is negative

(b)

\(\left( \cfrac { \Delta { G }^{ 0 } }{ \Delta T } \right) \) is positive

(c)

\(\left( \cfrac { \Delta { G }^{ 0 } }{ \Delta T } \right) \) is negative

(d)

initially \(\left( \cfrac { \Delta T }{ \Delta { G }^{ 0 } } \right) \) is positive, after 700^oC,\(\left( \cfrac { \Delta { G }^{ 0 } }{ \Delta T } \right) \) is negative

Identify the metal that occurs in free state.

(a)

Al

(b)

Au

(c)

Mg

(d)

Ca

The element that does not show catenation among the following p-block elements is ________.

(a)

Carbon

(b)

silicon

(c)

Lead

(d)

germanium

Group 14 elements have general electronic configuration _______.

(a)

ns²

(b)

ns²np⁴

(c)

ns²np⁶

(d)

ns²np²

On hydrolysis, PCl₃ gives________.

(a)

H₃PO₃

(b)

PH₃

(c)

H₃PO₄

(d)

POCl₃

A white crystalline salt (A) react with dilute HCl to liberate a suffocating gas (B) and also forms a yellow precipitate. The gas (B) turns potassium dichromate acidified with dil H₂SO₄ to a green coloured solution(C).  A, B and C are respectively ________.

(a)

Na₂SO₃, SO₂, Cr₂(SO₄)₃

(b)

Na₂S₂O₃, SO₂, Cr₂(SO₄)₃

(c)

Na₂S, SO₂, Cr₂(SO₄)₃

(d)

Na₂SO₄, SO₂, Cr₂(SO₄)₃

CrO₃ is coloured due to_______.

(a)

Low L.E

(b)

Crystal defects

(c)

Charge transfer spectra

(d)

Unpaired electrons

Which one of the following pairs represents linkage isomers?

(a)

[Cu(NH₃)₄][PtCl₄] and [Pt(NH₃)₄][CuCl₄]

(b)

[Co(NH₃)₅(NO₃)]SO₄ and [Co(NH₃)₅(ONO)]

(c)

[Co(NH₃)₄(NCS)₂]Cl and [Co(NH₃)₄(SCN)₂]Cl

(d)

both (b) and (c)

[Fe(H₂O)₆]³⁺ and [Fe(CN)₆]^3- differ in _______.

(a)

magnetic nature

(b)

co-ordination number

(c)

oxidation number

(d)

Structure

The geometry of [Ni(CN)₄]^2- is _______.

(a)

Tetrahedral

(b)

Square planar

(c)

Triangular

(d)

Octahedral

In an octahedral complex, the (n-1) d orbital are involved in hybridization. The complex is called ________ complex.

(a)

inner orbital

(b)

low spin

(c)

spin paired

(d)

all the above

The vacant space in bcc lattice unit cell is ________.

(a)

48%

(b)

23%

(c)

32%

(d)

26%

Which one of the following does not belong to AB type?

(a)

Cu₂O

(b)

CsCl

(c)

FeS

(d)

ZnS

The force that binds a metal ion to a number of electrons within its sphere of influence is known as_________ bond.

(a)

covalent

(b)

ionic

(c)

metallic

(d)

co-ordinate

For a first order reaction, the rate constant is 6.909 min^-1 the time taken for 75% conversion in minutes is _______.

(a)

\(\left( \frac { 3 }{ 2 } \right) { \log 2 }\)

(b)

\(\left( \frac { 2 }{ 3 } \right) \log2\)

(c)

\(\left( \frac { 3 }{ 2 } \right) \log\left( \frac { 3 }{ 4 } \right) \)

(d)

\(\left( \frac { 2 }{ 3 } \right) \log\left( \frac { 4 }{ 3 } \right) \)

The pH of 10^-5M KOH solution will be _______.

(a)

9

(b)

5

(c)

19

(d)

none of these

In an electrical field, the particles of a colloidal system move towards cathode. The coagulation of the same sol is studied using K₂SO₄
(i), Na₃ PO₄
(ii), K₄ [Fe(CN)₆]
(iii) and NaCl
(iv) Their coagulating power should be

(a)

II > I > IV > III

(b)

III > II > I > IV

(c)

I > II > III > IV

(d)

none of these

The intermediate compound formation theory applies to _______reactions.

(a)

homogeneous

(b)

heterogeneous

(c)

both (a)& (b)

(d)

none of the above

Which one of the following reduces tollens reagent

(a)

formic acid

(b)

acetic acid

(c)

benzophenone

(d)

none of these

Aldehydes and ketones are reduced to hydrocarbons by zinc amalgam and cone.HCI. This is__________ reaction.

(a)

Clemmenson's reduction

(b)

Wolff krishner reduction

(c)

Rosenmmunds reduction

(d)

catalytic reduction

Among the following, the reaction that proceeds through an electrophilic substitution is : _______.

(a)

(b)

(c)

(d)

Amines have __________ odour.

(a)

carbolic

(b)

mustard oil

(c)

fishy

(d)

garlic

Which of the following are epimers?

(a)

D(+)-Glucose and D(+)-Galactose

(b)

D(+)-Glucose and D(+)-Mannose

(c)

Neither (a) nor (b)

(d)

Both (a) and (b)

Insulin is an example of_______hormone.

(a)

paracrine

(b)

endocrine

(c)

autocrine

(d)

none of the above

The drug used to induce sleep is _______________.

(a)

paracetamol

(b)

bithional

(c)

chloroquine

(d)

equanil