| 1 |
World's 80percent coal production consists of: |
- A. Bituminous coal
- B. Lignitecoal
- C. Anthracitecoal
- D. Browncoal
|
| 2 |
In peat coal, carbon content may be: |
- A. Up to 20 percent
- B. Up to 30 percent
- C. Up to 80 percent
- D. Up to 70 percent
|
| 3 |
In 18th century, due to steel industry & railway in Europe and U.S.A: |
- A. Demand of coal became less
- B. Demand of coal increased steadily
- C. Use of coal increased slowly
- D. No change took place in use of coal
|
| 4 |
Commercially significant coal deposits occur in: |
- A. Sedimentary rocks basins
- B. Metamorphicrocks basins
- C. Igniousrocks basins
- D. Plateaurocks basins
|
| 5 |
In anthracite coal, pure carbon content is: |
- A. 50 percent
- B. 25 percent
- C. 80 percent
- D. 92 to 95 percent
|
| 6 |
In the world, out of total energy, 29.2 percent is being produced from: |
- A. Coal
- B. Petroluem
- C. Natural gas
- D. Hydroelectricity
|
| 7 |
In the continent of South America, coals reserves are: |
- A. 20 percent of the total reserves
- B. About 30 percent of total reserves
- C. 80 percent of the total reserves
- D. Only 1.6 percent of total reserves
|
| 8 |
In the world, coal reserves are present: |
- A. In 50 countries
- B. In 70countries
- C. In 100countries
- D. In 150countries
|
| 9 |
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
|
| 10 |
Quality of coal depends upon: |
- A. Carbon content of coal
- B. Hydrogen content of coal
- C. sulphur content of coal
- D. Silicon content of coal
|
