| 1 |
In the decade of 1970, due to use of coal in thermal electricity production: |
A dramatic increase took place in use of coal
A small increase took place in use of coal
No change took place in use of coal
Demand of coal decreased slowly
|
| 2 |
In 19th century, due to use of petroleum and natural gas: |
Demand of coal became less
No change took place in demand of coal
Coal demand increased
Coal mining was almost stopped
|
| 3 |
In 18th century, due to steel industry & railway in Europe and U.S.A: |
Demand of coal became less
Demand of coal increased steadily
Use of coal increased slowly
No change took place in use of coal
|
| 4 |
In 18th century, due to invention of steam engine & engineering industry: |
Spurred enormous growth in the coal use
Use of coal increased a little
No change took place in coal use
Coal use became less
|
| 5 |
In United Kingdom, use of coal started: |
Before 1000 B.C
In thirteenth century A.D
In 18th century A.D
In 19th century A.D
|
| 6 |
In north-eastern China, Fashon coal mines are: |
Oldest coal mines in China
Recent coal mines in China
Largest coal mines in China
Deepest coal mines in China
|
| 7 |
Historians believe that coal is first commercially mined in: |
China
United Kingdom
India
United States of America
|
| 8 |
Quality of coal depends upon: |
Carbon content of coal
Hydrogen content of coal
sulphur content of coal
Silicon content of coal
|
| 9 |
Coal, petroleum, natural gas, nuclear energy and solar energy are: |
Important means of energy
Not means of energy
Nominal means of energy
Unimportant means of energy
|
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