| 73. |
The ozone layer at high altitude contains |
| A. |
atomic oxygen (O) and ordinary oxygen (O2) |
| B. |
only ozone (O3) |
| C. |
mixture of atomic oxygen (O), ordinary oxygen (O2) and Ozone (O3) |
| D. |
only ordinary oxygen (O2) |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
|
| 74. |
The number of a topographic map is 47A/16/NW. Its scale must be |
| A. |
1 : 250,000 |
| B. |
1 : 100,000 |
| C. |
1 : 50,000 |
| D. |
1 : 25,000 |
Answer: Option D
Explanation:
No answer description available for this question. Let us discuss.
|
| 75. |
The right ascension is the equivalent of longitude on the celestial sphere, and it is given in the units of |
| A. |
degrees |
| B. |
time-hours, minutes and seconds |
| C. |
only hours |
| D. |
only seconds |
Answer: Option B
Explanation:
No answer description available for this question. Let us discuss.
|
| 76. |
The radiation belts are zones in space around the |
| A. |
Earth |
| B. |
Jupiter and Saturn |
| C. |
Mercury |
| D. |
Earth, Jupiter and Saturn |
Answer: Option D
Explanation:
No answer description available for this question. Let us discuss.
|
| 77. |
The periods of different eras are further divided into |
| A. |
eons |
B. |
epochs |
| C. |
stages |
D. |
Any of the above |
Answer: Option C
Explanation:
No answer description available for this question. Let us discuss.
|
| 78. |
The Plio-Pleistocene boundary lies about ____ years ago, at the beginning of the interval of warming after the last Pleistocene glaciations. |
| A. |
1,00,000 |
B. |
1,000 |
| C. |
10,000 |
D. |
100 |
Answer: Option C
Explanation:
No answer description available for this question.
|
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