100+ Inorganic Chemistry MCQ Questions and Answers pdf - 3

Question: 11

Mention the uses of sulphur and silicon?

Sulphur is used as fungicide.

It is also used in the vulcanisation of rubber.

Silicon is a semiconductor.

It is used in transistors and to prepare alloys like silicobronze which is used to make telephone wires.

Question: 12

What are the uses of non metals?

Coal is used as fuel.

Diamond and graphite have variety of applications.

Phosphorous is used in the manufacture of fertilizers and fireworks.

It is essential plant nutrient.

It is important for bones and teeth of animals.

Question: 13

What is corrosion?

Wasting away of metals due to the formation of metal compounds on the surface is called corrosion.

Corrosion of iron is called rusting.

The layer of rust easily gets separated from the surface of iron objects.

Question: 14

What are called noble metals?

Gold and platinum are called noble metals because they remain unaffected by air, water, acids and alkalies.

Question: 15

Define conductivity?

The property of conducting heat and electricity is called conductivity.

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