Question # 1

Commercially significant coal deposits occur in:

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Sedimentary rocks basins

Metamorphicrocks basins

Igniousrocks basins

Plateaurocks basins

In anthracite coal, pure carbon content is:

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50 percent

25 percent

80 percent

92 to 95 percent

Which country of the world, possesses largest reserves of coal ?

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China

Russian Federation

United States of America

Brazil

In 19th century, due to use of petroleum and natural gas:

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Demand of coal became less

No change took place in demand of coal

Coal demand increased

Coal mining was almost stopped

In 18th century, due to steel industry & railway in Europe and U.S.A:

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Demand of coal became less

Demand of coal increased steadily

Use of coal increased slowly

No change took place in use of coal

In 18th century, due to invention of steam engine & engineering industry:

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Spurred enormous growth in the coal use

Use of coal increased a little

No change took place in coal use

Coal use became less

World's 28 percent reserves of coal are in the continent of:

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North America

Europe

Australia

South America

Black colour of coal is due to its:

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Carbon content

Hydrogen content

Sulphur content

Phosphorous content

In bituminous coal, carbon content may be:

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20 percent

50 percent

60-80 percent

30 percent

World's total estimated coal reserves are:

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891.531 billion metric tons

5 trillionmetric tons

10 trillion metric tons

15 trillion metric tons

Coal reserves are:

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Exhaustable source of energy

Un-exhautable source of energy

Renewable source of energy

Ever increasing resources of energy

World's largest producer of coal is:

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China

Canada

United Kingdom

United States of America

World's percent coal reserves are present in the continent of:

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Africa

Asia

Europe

Australia

Best quality of coal is:

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Anthracite

Bituminous

Lignite

Peat

Quality of coal depends upon:

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Carbon content of coal

Hydrogen content of coal

sulphur content of coal

Silicon content of coal

In lignite coal, carbon content may be:

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Only 10 percent

45 - 65percent

Up to 25percent

Up to 90percent

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