Chemistry Ozone depletion in the atmosphere is mainly caused by Sulphur dioxide Chlorofluorocarbon Nitrogen dioxide Hydrogen sulphide Sulphur dioxide Chlorofluorocarbon Nitrogen dioxide Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Impure camphor is purified by Steam distillation Fractional distillation Fractional crystallisation Sublimation Steam distillation Fractional distillation Fractional crystallisation Sublimation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element in the earth’s atmosphere is Argon Krypton Nitrogen Oxygen Argon Krypton Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is the heaviest metal among the following? Iron Silver Copper Gold Iron Silver Copper Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Carbonates from soil Water Oxides of mineral elements Carbon dioxide Carbonates from soil Water Oxides of mineral elements Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief constituent of natural gas is: Methane Nitrogen Propane Helium Methane Nitrogen Propane Helium ANSWER DOWNLOAD EXAMIANS APP
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