Question # 1

Which one of the following elements occurs free in nature?

Choose an answer

N

P

As

Sb

The treatment of benzene with isobutene in the presence of sulphuric acid give

Choose an answer

Isobutyl benzene

Tert-Butyl benzene

n-Butyl benzene

no reaction

The spectrum of helium is expected to be similar to that of

Choose an answer

H

Li⁺

Na

He⁺

Calcium acetate when dry distilled gives

Choose an answer

Formaldehyde

Acetaldehyde

Acetone

Acetic anhydride

The number of unpaired electrons in the P-subshell of oxygen atom

Choose an answer

1

2

3

4

In the equilibrium

N₂ + 3H₂ - 2NH₃ + 22 kcal the formation of ammonia is favoured by

Choose an answer

Increasing the pressure

Increasing the temperature

Decreasing the pressure

Adding ammonia

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

Choose an answer

AI

Ag

Au

Fe

Which of the following alkali metal hydroxides is the strongest base?

Choose an answer

LiOH

NaOH

KOH

CaOH

Cheif air pollutant which is likely to deplete ozone layer

Choose an answer

Sulphure dioxide

Carbon dioxide

Nitrogen oxides and chloro fluorocarbons

In which of the following elements +1 oxidation state is more stable than +3

Choose an answer

B

AI

Ga

Ti

The relative rate of diffusion of a gas (molecular wright - 128) as compared to oxygen is

Choose an answer

2 times

1/4

1/8

1/2

The addition of HBr is easiest with

Choose an answer

CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

If the solvent is inflammable for heating purpose we use

Choose an answer

Ice bath

Water bath

Wire gauze

Thermostat

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

Which one is not a pollutant normally?

Choose an answer

Hydrocarbons

Carbon dioxide

Carbon monoxide

Sulphur dioxide

Which of the following metal exhibits more than one oxidation?

Choose an answer

Na

Mg

Fe

Al

Sulphure dioxide affects

Choose an answer

Cell wall

Plasmodesmata

All membrane systems

Nucleus

Ethyl alcohol is industrially prepare from ethylene by

Choose an answer

Permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

For most of the chemical reactions the rate of reaction

Choose an answer

Increase as the reaction proceeds

Decrease as the reaction proceeds

May increase or decrease during the reaction

Remains constant as the reaction proceeds

The essential component of organic compound is

Choose an answer

O

C

P

N

Which of the substances Na, Hg, S, Pt and graphite 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 reagent cannot be used for preparing alkyl chloride from alcohol?

Choose an answer

HCl + anhyd. ZnCl₂

NaCl

PCl₅

SOCl₂

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