Electrochemical process is used to extract_______.

(a)

Iron

(b)

Lead

(c)

Sodium

(d)

silver

Oxidation state of carbon in its hydrides _______.

(a)

+4

(b)

-4

(c)

+3

(d)

+2

Group 14 elements have general electronic configuration _______.

(a)

ns²

(b)

ns²np⁴

(c)

ns²np⁶

(d)

ns²np²

The catalytic behaviour of transition metals and their compounds is ascribed mainly due to _______.

(a)

their magnetic behaviour

(b)

their unfilled d orbitals

(c)

their ability to adopt variable oxidation states

(d)

their chemical reactivity

The hypothetical complex triamminediaqua chloridocobalt (III)chloride can be represented as _______.

(a)

[Co(NH₃)₃(H₂O)₂Cl]Cl₂

(b)

[Co(NH)₃(H₂O)Cl₃]

(c)

[Co(NH₂)₃(H₂O)₂Cl]

(d)

[Co(NH₃)₃(H₂O)₃]Cl₃

The structure of hexaaquatitanium (III) ion is _______.

(a)

[Ti(H₂O)₆]³⁺

(b)

[Ti(H₂O)₆]^3-

(c)

[Ti(H₂O)₅]H₂O

(d)

[Ti(H₂O)₆]

The number of carbon atoms per unit cell of diamond is _______.

(a)

8

(b)

6

(c)

1

(d)

4

For a first order reaction A ⟶ product with initial concentration x mol L^-1, has a half life period of 2.5 hours. For the same reaction with initial concentration \(\left( \frac { x }{ 2 } \right) \) mol L^-1 the half life is

(a)

(2.5 x 2) hours

(b)

\(\left( \frac { 2.5 }{ 2 } \right) \) hours

(c)

2.5 hours

(d)

Without knowing the rate constant, t_1/2 cannot be determined from the given data

For a reaction, E_a = 0 and k = 4.2 x 10⁵ sec^-1 at 300 K, the value of kat 310 K will be _______.

(a)

4.2 x 10⁵ sec^-1

(b)

8.4 x 10⁵ sec^-1

(c)

8.4 x 10⁵ sec^-1

(d)

unpredictable 

The solubility of BaSO₄ in water is 2.42 × 10^-3gL^-1 at 298K. The value of its solubility product(K_sp) will be (Given molar mass of BaSO₄ =233g mol^-1)

(a)

1.08 × 10^-14mol²L^-2

(b)

1.08 × 10^-12mol²L^-2

(c)

1.08 × 10^-10mol²L^-2

(d)

1.08 × 10^-8mol²L^-2

In the electrochemical cell: Zn|ZnSO_{4 (0.01M)}|| CuSO_{4 (1.0M)}|Cu, the emf of this Daniel cell is E₁. When the concentration of ZnSO₄ is changed to 1.0M and that CuSO₄ changed to 0.01M, the emf changes to E₂. From the above, which one is the relationship between E₁ and E₂?

(a)

E₁ < E₂

(b)

E₁ > E₂

(c)

E₂ ≥ E₁

(d)

E₁ = E₂

The emf of a cell with 1 M solution of reactants and products in solution at 25°C is called ______.

(a)

Half cell potential

(b)

Standard emf

(c)

Single electrode potential

(d)

Redox potential

Argyrol is_______.

(a)

colloidal silver

(b)

colloidal antimony

(c)

colloidal gold

(d)

milk of magnesia

 is an example of ________.

(a)

Simple

(b)

mixed

(c)

aliphatic

(d)

both (a) and (c)

Isomerism exhibited by ethylene glycol is ________.

(a)

position isomerism

(b)

chain isomerism

(c)

functional isomerism

(d)

both (a) and (c)

Benzoic acid \(\overset { i){ NH }_{ 3 } }{ \underset { ii)\Delta }{ \longrightarrow } } A\overset { NaOBr }{ \longrightarrow } B\overset { NaN{ O }_{ 2 }/HCl }{ \longrightarrow } \) C 'C'  is ______.

(a)

anilinium chloride

(b)

O – nitro aniline

(c)

benzene diazonium chloride

(d)

m– nitro benzoic acid

Ozonolysis of terminal alkenes gives _________ as one of the products.

(a)

acetone

(b)

acetaldehyde

(c)

water

(d)

formaldehyde

Which of the following compounds has the smell of bitter almonds?

(a)

aniline

(b)

nitro methane

(c)

benzene sulphonic acid

(d)

nitrobenzene

Among the following L- serine is ______.

(a)

(b)

(c)

(d)

A dipeptide does not have

(a)

two peptide units

(b)

portions of two amino acids

(c)

an amino group

(d)

salt like structure

The precipitation of protein is called_______

(a)

peptisation

(b)

denaturation

(c)

renaturation

(d)

none of these

The polymer used in making blankets (artificial wool) is _______.

(a)

polystyrene

(b)

PAN

(c)

polyester

(d)

polythene

Nylon -66 is an example of ______ polymer.

(a)

addition

(b)

condensation

(c)

both (a) and (b)

(d)

natural

The drug that binds to the receptor site and inhibits its natural function are called _______

(a)

anomers

(b)

agonists

(c)

antagonists

(d)

none of the above

Potassium meta bisulphite is used as ________

(a)

food preservative

(b)

sweetening agent

(c)

a cosmetic

(d)

an antioxidant