A
61) The main source of carbon monoxide is
Correct Answer - Option
(C)
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A
62) Highly toxic gas which causes headache, visual difficulty, paralysis and even death is
Correct Answer - Option
(C)
Explanation :
Carbon monoxide intoxication can be caused by single or repetitively generated high short-term peaks, and carbon monoxide poisoning is the leading cause of death from poisoning (accidental and intentional).
A
63) Water gas is the combination of
Correct Answer - Option
(A)
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A
64) The gas that causes suffocation and death when coal or coke is burnt in a closed room is
Correct Answer - Option
(C)
Explanation :
Exhaust fumes of motor cars, gases produced from coal fire in a closed room and coal gas, all contain carbon monoxide, which is the cause of their poisonous nature. When carbon monoxide is inhaled, it prevents the oxygen from combining with hemoglobin and instead combines itself with hemoglobin to form carboxyhaemoglobin, which is stable compound. This causes oxygen starvation in the body tissues and eventually causes death by suffocation.
A
65) Which one is not a pure form of carbon?
Correct Answer - Option
(D)
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A
66) Which one is the purest form of carbon?
Correct Answer - Option
(C)
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A
67) Which type of fire extinguisher is used for petroleum fire ?
Correct Answer - Option
(C)
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A
68) Man dies in the atmosphere of CO, because it
Correct Answer - Option
(D)
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A
69) It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of
Correct Answer - Option
(B)
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A
70) Which gas is used as fire extinguisher ?
Correct Answer - Option
(A)
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