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1) Which state is the largest producer of wheat in India ?
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2) Which state is the largest producer of rice in India ?
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3) Which of the following gases is present under pressure in soft drinks?
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4) If we burn graphite
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5) Lead pencil contains
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6) Highest percentage of carbon is found in which form of coal?
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7) The main source of carbon monoxide is
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8) Highly toxic gas which causes headache, visual difficulty, paralysis and even death is
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).
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9) Water gas is the combination of
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10) The gas that causes suffocation and death when coal or coke is burnt in a closed room is
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.
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