Engineering :: Environmental Engineering
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141. |
BF3 counter can detect which of the following radiations? |
A. |
Alpha particles |
B. |
Neutrons |
C. |
X-rays |
D. |
Beta rays |
Answer: Option B
Explanation:
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142. |
Addition to alum increases |
A. |
hardness of water |
B. |
carbonates of water |
C. |
sulphates in water |
D. |
Acidity of water |
Answer: Option D
Explanation:
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143. |
Aeration of water is done for all of the following purposes EXCEPT for: |
A. |
removal of bad tastes |
B. |
removal of carbon dioxide |
C. |
increasing the quantity of oxygen in water |
D. |
removal of temporary hardness |
Answer: Option D
Explanation:
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144. |
When the trees are to be planted by the road side the minimum distance from the out edge of side width should be |
A. |
0.5 to 1 metre |
B. |
2 to 3 metres |
C. |
5 to 8 metres |
D. |
12 to 15 metres |
Answer: Option B
Explanation:
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145. |
Which of the following area of work needs lowest noise level? |
A. |
Gymnasiums |
B. |
Lecture halls |
C. |
Library |
D. |
Kitchens |
Answer: Option C
Explanation:
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146. |
Geiger Muller counter can detect |
A. |
beta rays |
B. |
X-rays |
C. |
gamma rays |
D. |
All of the above |
Answer: Option D
Explanation:
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147. |
Mycotoxins are poisonous chemicals produced by |
Answer: Option C
Explanation:
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148. |
Fuel which detonates easity is |
A. |
Benzene |
B. |
Iso-octance |
C. |
n-heptane |
D. |
Toulene |
Answer: Option C
Explanation:
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149. |
Which of the following is not a constituent of coal? |
A. |
Hydrogen |
B. |
Nitrogen |
C. |
Inorganic matter |
D. |
Manganese |
Answer: Option D
Explanation:
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150. |
Which of the following engines uses two fuels simulataneously? |
A. |
Multifuel engine |
B. |
Wankel engines |
C. |
Free piston gas generator |
D. |
Dual fuel engines |
Answer: Option D
Explanation:
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