Practice Questions on General Science - Chemistry
General Knowledge

Section-1: General Science - Chemistry Question - 16

Q16.

The chemical formula of magnetite is:

A.

$Fe_2O_4$

B.

$Fe_3O_4$

C.

$Fe_2O_3$

D.

$FeO$

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Section-1: General Science - Chemistry Question - 17

Q17.

The compound that is not a major constituent of clay minerals is:

A.

alkali metals

B.

iron

C.

sulphur

D.

magnesium

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Section-1: General Science - Chemistry Question - 18

Q18.

The mineral containing both magnesium and calcium is:

A.

magnesite

B.

carnallite

C.

calcite

D.

dolomite

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Section-1: General Science - Chemistry Question - 19

Q19.

Floating zone process is used for the purification of :

A.

Germanium

B.

Argon

C.

Aluminium

D.

Copper

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Section-1: General Science - Chemistry Question - 20

Q20.

Ionic compounds conduct electricity when molten or in solution except:

A.

Potassium iodide

B.

Sodium chloride

C.

Silver bromide

D.

Rubidium silver iodide

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