Chemistry The main active constituent of tea and coffee is nicotine aspirin chlorophyll caffeine nicotine aspirin chlorophyll caffeine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper substances when exposed to air gains a green coating due to the formation of: Cu(NO3)2 CuCO3 Cu(OH)2 CuSO4 CuO Cu(NO3)2 CuCO3 Cu(OH)2 CuSO4 CuO ANSWER DOWNLOAD EXAMIANS APP
Chemistry In a Carbonyl group a carbon atom makes double bond with None of these Oxygen Carbon Hydrogen None of these Oxygen Carbon Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere? Carbon dioxide Nitrous oxide Sulphur dioxide Chlorofluorocarbons Carbon dioxide Nitrous oxide Sulphur dioxide Chlorofluorocarbons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone consists of Oxygen and Carbon Oxygen only Oxygen and Nitrogen Hydrogen and Carbon Oxygen and Carbon Oxygen only Oxygen and Nitrogen Hydrogen and Carbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The wire of flash bulb is made of: Magnesium Copper Barium Silver Magnesium Copper Barium Silver ANSWER DOWNLOAD EXAMIANS APP
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