Question # 1

Which is not a a colligative property?

Choose an answer

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

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

With increasing principle quantum number, the energy difference between adjacent energy levels in H atom

Choose an answer

Decreases

Increases

Remain constant

Decreses for low value of Z and increases for higher value of Z.

Which of the following has linear shape?

Choose an answer

SP

SP²

SP³

None of the above

The pure crystalline substance on being heated gradually first forms turbid liquid at constant temperature and still at higher temperature turbidity completely disapp-ears. The behaviour is a characteristic of substance forming

Choose an answer

Allotropic crystal

Liquid crystals

Isomeric crystals

Isomorphous crystals

Aldehydes are produce in atmosphere by

Choose an answer

Oxidation of secondary alcohols

Reduction of alkenes

Reaction of oxygen atoms with hydrocarbons

Reaction of oxygen atoms with ozone.

Ozane is not

Choose an answer

An allotrope

A powerful oxidizing agent

Paramegnetic

a bent molecule

In a crystal a≠b≠c, a =γ= 90° andβ≠90°. It is

Choose an answer

Monoclinic

Rhombic

Trigonal

Tetragonal

The halide which is not hydrolysed is

Choose an answer

SiCl₄

SiF₄

CCl₄

PbCl₄

White P when boiled with strong solution of caustic soda produces

Choose an answer

Phosphine

Posh acid

Phosphorous acid

None

Which one is the property of an ideal solvent?

Choose an answer

Should be expensive

It should react chemically with the solute

Impurities should crystallize along with the solute

Should be safe to use

Phosphide ion has the electronic structure similar to that of

Choose an answer

Nitride ion

Fluoride ion

Sodium ion

Chloride ion

1-Chloropropane has two isomers. It is an example of

Choose an answer

Chain isomerism

Position isomerism

Function group isomerism

Meramerism

Propyne on hydrolysis is presence of H₂SO₄and HgSO_{4 gives}

Choose an answer

Acetaldehyde

Acetone

Formaldehyde

None

Natural fertilizer provides phosphorus to plants in the form of P₂O₅

Choose an answer

1.2 kg

2.2 kg

3.2 kg

4 kg

Calcium cyanamide on treatment with steam under pressure gives NH₃and

Choose an answer

Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

Given below are some statements concerning formic acid, which of them is true?

Choose an answer

It is a weaker acid than acetic

it is a reducing agent

When its calcium salt is heated, it forms a ketone

It is an oxidizing agent

Which of the following fluorides does not exist?

Choose an answer

NF₅

PF₅

AsF₅

SbF₅

Which of the following is not present in RNA?

Choose an answer

Uracil

Thymine

Ribose

Phosphate

The number of atoms in 0.004 g of magnesium is close to

Choose an answer

24

2 x 10²⁰

10²⁰

6.02 x 10²³

Which of the following statements is most appropriate about effective nuclear charge? It depends upon

Choose an answer

The shielding constant

The atomic number

The charge on the nucleus

Both the nuclear charge and the shielding

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