Chemistry Ozone depletion in the atmosphere is mainly caused by Nitrogen dioxide Hydrogen sulphide Sulphur dioxide Chlorofluorocarbon Nitrogen dioxide Hydrogen sulphide Sulphur dioxide Chlorofluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main constituent of natural gas is Propane Butane Ethane Methane Propane Butane Ethane Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Insecticides Sewage Tobacco Leaded gasoline Insecticides Sewage Tobacco Leaded gasoline ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives Hydrogen at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode Hydrogen at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode ANSWER DOWNLOAD EXAMIANS APP
Chemistry The common name for the compound having formal NaOH is Soda ash Sodium hydroxide Caustic soda Caustic potash Soda ash Sodium hydroxide Caustic soda Caustic potash ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal used for making aircrafts and rockets is Copper Lead Aluminium Nickel Copper Lead Aluminium Nickel ANSWER DOWNLOAD EXAMIANS APP
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