31.
Soil is formed from the parent rock material by
A. chemical decomposition
B. physical decomposition
C. biological decomposition
D. All of the above
Answer & Explanation
Answer: Option D
Explanation:
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32.
The air we inhale is mixture of gases. Which of the following gases in the mixture is highest in percentage?
A. Carbon dioxide
B. Nitrogen
C. Oxygen
D. Ozone
Answer & Explanation
Answer: Option B
Explanation:
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33.
Oxford university was founded in
A. 1139 AD
B. 1163 AD
C. 215 BC
D. 55 BC
Answer & Explanation
Answer: Option B
Explanation:
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34.
The American General who led the revolt against the British and declared American independence was
A. George Washington
B. Bill Clinton
C. George Bush
D. None of the above
Answer & Explanation
Answer: Option A
Explanation:
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35.
Regular meetings of Trusteeship Council (UNO) are held
A. once a year
B. twice a year
C. thrice a year
D. four times a year
Answer & Explanation
Answer: Option B
Explanation:
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36.
Radioactive substances can be produced readily in
A. an electron gun
B. an atomic pile
C. a transistor
D. a Wilson cloud chamber
Answer & Explanation
Answer: Option B
Explanation:
No answer description available for this question.