| 1 |
Historians believe that coal is first commercially mined in: |
- A. China
- B. United Kingdom
- C. India
- D. United States of America
|
| 2 |
Among all categories lignite coal its: |
- A. Most superior
- B. Most inferior
- C. Not good quality
- D. Not superior quality
|
| 3 |
World's percent coal reserves are present in the continent of: |
- A. Africa
- B. Asia
- C. Europe
- D. Australia
|
| 4 |
Best quality of coal is: |
- A. Anthracite
- B. Bituminous
- C. Lignite
- D. Peat
|
| 5 |
World's huge coal reserves of northern hemisphere are located: |
- A. Between 35°-50° north latitude
- B. Between 5°-10° north latitude
- C. Between 80°-90° north latitude
- D. Between 10°-20° latitude
|
| 6 |
Coal reserves are: |
- A. Exhaustable source of energy
- B. Un-exhautable source of energy
- C. Renewable source of energy
- D. Ever increasing resources of energy
|
| 7 |
Black colour of coal is due to its: |
- A. Carbon content
- B. Hydrogen content
- C. Sulphur content
- D. Phosphorous content
|
| 8 |
Commercially significant coal deposits occur in: |
- A. Sedimentary rocks basins
- B. Metamorphicrocks basins
- C. Igniousrocks basins
- D. Plateaurocks basins
|
| 9 |
In bituminous coal, carbon content may be: |
- A. 20 percent
- B. 50 percent
- C. 60-80 percent
- D. 30 percent
|
| 10 |
In the earth's crust, coal formation began during carboniferous period which spanned: |
- A. 360 to 290 million years before present
- B. 500 million years before present
- C. 100 million before present
- D. 50 million years before present
|
