Question # 1

Among alkali metal salts, the lithium salts are the poorest conductors of electricity in aqueous solution because of

Choose an answer

Easy diffusion of Li⁺ions

Lower ability of Li⁺ions to polarize water molecules

Lowest charge to radius ratio

Higher degree of hydration of Li⁺ions

The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is

Choose an answer

22.4 litres

11.2 litres

1 litre

2.24 litres

The ratio of the ionization energy of H and Be³⁺is

Choose an answer

1 : 1

1 : 3

1 : 9

1 : 16

Which metal is protected by a layer of its own oxide?

Choose an answer

Al

Ag

Au

Fe

Which of the following possesses the highest melting point?

Choose an answer

Chlorobenzene

o- Dichlorobenzene

m-Dichlorobenzene

p-Dichlorobenzene

The molal elevation constant is the ratio of the elevation in boiling point to

Choose an answer

Mojarity

Molality

Mole fraction of solute

Mole fraction of solvent

Calcium acetate when dry distilled gives

Choose an answer

Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

The osmotic pressure of solution increases if

Choose an answer

Temperature is decreased

Solution constant is increased

Number of solute molecules are increased

Volume is increased

Which of the following pairs are chemically dissimilar?

Choose an answer

Na and K

Ba and Sr

Zr and Hf

Ca and Zn

Which of the following as a molecular diseaes?

Choose an answer

Allergy

Cancer

German measles

Sickle cell anemia

Acetylene gives

Choose an answer

White ppt. with ammonical AgNO₃and red ppt. with ammonical Cu(NO₃)₂

White ppt. with ammonical AgNo_{3 and red ppt. with ammonical}Cu₂Cl₂

White ppt. with both

Red ppt. with both

Ozane is not

Choose an answer

An allotrope

A powerful oxidizing agent

Paramegnetic

a bent molecule

In which molecule carbon atom is sp²hybridized

Choose an answer

CH₄

C2H₄

C₂H₂

None of the above

The rate of reaction between A and B increases by a factor of 100, and when the concentration with respect to A is increased 10 folds, the order of reaction w.r.t. A is

Choose an answer

10

1

4

2

The acid used in lead storage cells is

Choose an answer

Phosphoric acid

Nitric acid

Sulphuric acid

Hydrochloric acid

Bragg's law is given by equation

Choose an answer

nλ= 2θsinθ

nλ= 2 d sinθ

2 nλ= d sinθ

nλ= 1/2 d sinθ

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

Choose an answer

1000 kg

56 kg

44 kg

100 kg

The maximum number of electrons in a subshell for whichι = 3 is

Choose an answer

14

10

8

4

In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in

Choose an answer

Lowering in b.pt.

Reducing viscity

Reducing specific heat

Lowering in freezing pt.

Sodium metal cannot be stored under

Choose an answer

Benzene

Kerosene oil

Alcohol

Toluene

Which of the following units represents largest amount of energy?

Choose an answer

Calorie

Joule

Erg

Electron vol.

More Classes

Other Links

NAT II Biological Science Chemistry MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer