Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar infrared radiation SO2 in the air CO2 in the air Solar ultraviolet radiation Solar infrared radiation SO2 in the air CO2 in the air Solar ultraviolet radiation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following metals has least melting point ? Copper Silver Mercury Gold Copper Silver Mercury Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source of naphthalene is Coal-tar Charcoal Diesel Camphor Coal-tar Charcoal Diesel Camphor ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of natural gas is Ethane Propane Butane Methane Ethane Propane Butane Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is not a green house gas ? Chlorofluorocarbons CO2 N2O CH4 Chlorofluorocarbons CO2 N2O CH4 ANSWER DOWNLOAD EXAMIANS APP
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