Question # 1

Rusting of iron is catalysed by

Choose an answer

Fe

O₂

Zn

H⁺

Sulphure dioxide affects

Choose an answer

Cell wall

Plasmodesmata

All membrane systems

Nucleus

Which of the following imparts violet colouration to the non-luiminous flame of Bunsen burner?

Choose an answer

NaCI

BaCI₂

CaCI₂

KCI

Maximum number of active hydrogens are present in

Choose an answer

Acetic-acid

Glycerol

Methane

Methanol

Which one is not a pollutant normally?

Choose an answer

Hydrocarbons

Carbon dioxide

Carbon monoxide

Sulphur dioxide

Heating a mixture of sodium benzoate and soda lime gives

Choose an answer

Methane

Benzene

Sodium benzene

Calcium benzoate

In Friedal-Craft's alkylation besides AICI3 the other reactants are

Choose an answer

C6H6 + NH3

C6H6 + CH4

C6H6 + CH3CI

C6H6 + CH3COCI

Which of the following does not reflect the periodicity of elements?

Choose an answer

Bonding behaviour

Electronegativity

Ionisation potential

Neutron/proton ratio.

For the reaction

2A(g) + B(g) 3C(g) + D(g)

two moles each of A and B were taken into a flask The following must always be true when the system attained equilibrium

Choose an answer

[A] = [B]

[A] < [B]

[B] = [C]

[A] > [B]

If the solvent is inflammable for heating purpose we use

Choose an answer

Ice bath

Water bath

Wire gauze

Thermostat

Which of the substances Na, Hg, S Pt and graphic can be used as electrodes in electrolytic cells having aqueous solution?

Choose an answer

Na,Pt and graphite

Na and Hg

Pt and graphite only

Na and S only

Which of the following possesses the highest melting point?

Choose an answer

Chlorobenzene

o- Dichlorobenzene

m-Dichlorobenzene

p-Dichlorobenzene

2 g of oxygen contains number of atoms equal to that in

Choose an answer

0.5 g of hydrogen

4 g of sulphur

7 g of nitrogen

2.3 g of sodium

Ethanol containing some methanol is called

Choose an answer

Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

A cell constant is generally found by measuring the conductivity of aqueous solution of

Choose an answer

BaCl₂

KCl

NaCl

MgCl₂

In the manufacture of iron from haematite, limestone is added to act as.

Choose an answer

Flux

A reducing agent

Slag

An oxidizing agent

Water (H_2O) is liquid while hydrogen sulphide (H₂S) is a gas because

Choose an answer

Water has higher molecular weight

Hydrogen sulphide is a weak acid

Sulphure has high electronegativity than oxygen

Water molecules associate through hydrogen

DDT is formed from

Choose an answer

Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and benzene

Chlorobenzene and chlorine

Rusting of iron is catalysed by

Choose an answer

Fe

O₂

Zn

H⁺

Outermost shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

Choose an answer

XY

X₂Y

X₂Y₃

XY₂

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 number of electrons in the M shell of the element with atomic number 24 is

Choose an answer

24

12

13

8

More Classes

Other Links

Chemistry General Science Test Hard Mode 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

Choose an answer