Engineering :: Energy Conversion
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| 361. |
Metals approach superconductivity condition |
| A. |
at high temperatures |
B. |
at melting point |
| C. |
near 0?C |
D. |
near absolute zero |
Answer: Option D
Explanation:
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| 362. |
Fixed carbon in case of bituminous coals is less than |
Answer: Option A
Explanation:
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| 363. |
Humacite is the name associated with |
| A. |
lignites |
B. |
radioactive minerals |
| C. |
bitumins |
D. |
refrigerants |
Answer: Option C
Explanation:
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| 364. |
In case of humic coals, hydrogen percentage varies from |
| A. |
4 to 6 percent |
B. |
10 to 15 percent |
| C. |
16 to 20 percent |
D. |
20 to 30 percent |
Answer: Option A
Explanation:
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| 365. |
Hyperon has mass |
| A. |
greater than that of a proton and less than that of a deuteron |
B. |
less than that of a proton and more than that of a deutron |
| C. |
more than that of a proton as well as deutron |
D. |
less than that of a proton as well as deutron |
Answer: Option A
Explanation:
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| 366. |
Illuminating gas is |
| A. |
blast furnace gas |
B. |
coal and carburretted water gas |
| C. |
methane gas |
D. |
light petroleum gas |
Answer: Option B
Explanation:
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| 367. |
All of the following are hard coals EXCEPT |
| A. |
Authracite |
B. |
Lignite |
| C. |
Bituminous |
D. |
Semi-bituminous |
Answer: Option B
Explanation:
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| 368. |
All of the following are heavy metals EXCEPT: |
| A. |
Mercury |
B. |
Sodium |
| C. |
Chromium |
D. |
Cadmium |
Answer: Option B
Explanation:
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| 369. |
Which of the following is heavy oil? |
| A. |
Gasoline |
B. |
Kerosene oil |
| C. |
Diesel oil |
D. |
Bunker oil |
Answer: Option D
Explanation:
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| 370. |
Deuterium oxide is used in nuclear reactors as |
| A. |
fuel |
B. |
moderator |
| C. |
shield |
D. |
regulator |
Answer: Option B
Explanation:
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