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Q. The pollutant responsible for ozone holes is _______
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Q. The chief constituent of gobar gas is
Q. Bleaching powder is used in drinking water as a/an
Q. The charcoal used to decolourise brown sugar solution is
Q. Among the fuels given below, the one with highest calorific value is
Q. What are liberated when a base is dissolved in water?
Q. Which among the given is used as anaesthetics -
Q. What is the chemical formula of Hydrogen Cyanide?
Q. Conversion of chemical energy into electrical energy occurs in
Q. When zinc reacts with hydrochloric acid, the gas evolved is
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