Chemistry Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful Solar ultraviolet radiation SO2 in the air CO2 in the air Solar infrared radiation Solar ultraviolet radiation SO2 in the air CO2 in the air Solar infrared radiation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Copper Chromium Lead Cadmium Copper Chromium Lead Cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Cement is usually a mixture of : Calcium silicate and calcium ferrate Calcium silicate and calcium aluminate Calcium aluminate and calcium ferrate Lime stone and silicon dioxide Calcium silicate and calcium ferrate Calcium silicate and calcium aluminate Calcium aluminate and calcium ferrate Lime stone and silicon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the chemical symbol of mercury Mg Hg Mr None of these Mg Hg Mr None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which metal is extracted from sea water? Magnesium Potassium Beryllium Aluminium Magnesium Potassium Beryllium Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brine refers to : Pure water Salt water Starch water Sweet water Pure water Salt water Starch water Sweet water ANSWER DOWNLOAD EXAMIANS APP
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