Social Science Periodical Test Revision

______ is composed of rocks rich in silica and Aluminum?

• Sima

• Sial

The narrow belt of living organisms, both plants and animals, is called

• Hydrosphere

• Biosphere

• Lithosphere

The wide range of numerous species is know as

• Biodiversity

• Hydro diversity

• Theodiversity

The average thickness of the lithosphere comes to be about ____Km

• 100

• 10

• 1000

About___% of the earth's surface is covered with water

• 71

• 3

• 0.9

The earth is believed to be metallic, consisting predominantly of________ and __________

• Nickel and Iron

• Magnesium and Nickel

• Aluminum and Iron

Sima is the outer covering of the earth crust.

• True

• False

Three organs of the central Government are State Legislature, State Executive, State Legislature council.

• True

• False

How many states are there in India

• 23

• 28

• 21

• 25

The state laws are made by the State Legislatures.

• False

• True