Chemistry The depletion of ozone layer is due to Carbon dioxide Sulphur dioxide Chloro fluoro carbon Ethane Carbon dioxide Sulphur dioxide Chloro fluoro carbon Ethane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sulphur dioxide level in the atmosphere can be reduced by using More efficient car engines Static electricity to attract it in factory chimneys Low - sulphur fuels Catalytic converters in industry More efficient car engines Static electricity to attract it in factory chimneys Low - sulphur fuels Catalytic converters in industry ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which substance is used to retard the setting action of cement? Al2O3 Na2O + K2O CaSO4, 2H2O CaO Al2O3 Na2O + K2O CaSO4, 2H2O CaO ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in the manufacture of lead pencil is Mica Graphite Lead Carbon Mica Graphite Lead Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chemical name of rat poison is Potassium cyanide Lead nitrate Zinc phosphide Zinc oxide Potassium cyanide Lead nitrate Zinc phosphide Zinc oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry KMnO4 can be used as Fertilizer Disinfectant Insecticide Pesticide Fertilizer Disinfectant Insecticide Pesticide ANSWER DOWNLOAD EXAMIANS APP
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