Chemistry MCQs

Question 1

Bridgmanite is

Accepted Answer

Earth’s most abundant mineral

Answer

A bridge on the river Thames

Answer

Name of a game

Answer

Name of a music

Question 2

Bronze is an alloy of

Accepted Answer

Copper and Tin

Answer

Copper and Zinc

Answer

Tin and Zinc

Answer

Iron and Zinc

Question 3

Percentage of carbon in steel ranges from

Accepted Answer

0.1 to 1.5

Answer

1.5 to 3.0

Answer

3.0 to 4.0

Answer

4.0 to 6.0

Question 4

Copper is refined by

Accepted Answer

Roasting

Answer

Oxidation

Answer

Electrolysis

Answer

Zone refining

Question 5

Froth floatation process to concentrate the minerals is applicable to

Accepted Answer

Chalcopyrites

Answer

Calamine

Answer

Bauxite

Answer

Haematite

Question 6

Chemical name of Gammaxane is

Accepted Answer

Benzene hexachloride

Answer

Toluene

Answer

Chloro benzene

Answer

Aniline

Question 7

Epsom salt is used

Accepted Answer

As purgative

Answer

In softening water

Answer

In paper industry

Answer

In making tooth paste

Question 8

The metal extracted from Bauxite is :

Accepted Answer

Aluminium

Answer

Silver

Answer

Copper

Answer

Manganese

Question 9

Among the following iron ores, the highest percentage of iron content is found in–

Accepted Answer

Haemetite

Answer

Magnetite

Answer

Limnonite

Answer

None of these