Q101
Open questionWhich of the following gases is present under pressure in soft drinks?
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Q102
Open questionIf we burn graphite,
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Q103
Open questionLead pencil contains
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Q104
Open questionHighest percentage of carbon is found in which form of coal?
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Q105
Open questionThe main source of carbon monoxide is
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Q106
Open questionHighly toxic gas which causes headache, visual difficulty, paralysis and even death is
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Q107
Open questionWater gas is the combination of
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Q108
Open questionThe gas that causes suffocation and death when coal or coke is burnt in a closed room is
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Q109
Open questionWhich one is not a pure form of carbon?
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Q110
Open questionWhich one is the purest form of carbon?
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Q111
Open questionWhich type of fire extinguisher is used for petroleum fire ?
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Q112
Open questionMan dies in the atmosphere of CO, because it
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Q113
Open questionIt is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of
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Q114
Open questionWhich gas is used as fire extinguisher ?
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Q115
Open questionThe process which does not evolve CO2 in air is
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Q116
Open questionThe metal used to galvanise iron to protect it from rusting is
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Q117
Open questionIron is prevented from rusting by coating with zinc. This process is called as
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Q118
Open questionAn electric iron has a heating element made of :
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Q119
Open questionThe metal chiefly used for galvanising iron is :
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Q120
Open questionThe anode in a dry cell consists of
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