Chemistry The most abundant rare gas in the atmosphere is Xe Ar Ne He Xe Ar Ne He ANSWER DOWNLOAD EXAMIANS APP
Chemistry Nucleus of an atom consists of. Electron, Proton and Neutron Proton and Neutron Proton Neutron Electron, Proton and Neutron Proton and Neutron Proton Neutron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Combustion of a candle is a/an Photochemical reaction Endothermic reaction Physical change Exothermic reaction Photochemical reaction Endothermic reaction Physical change Exothermic reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Rock salt is a mineral containing Potassium Magnesium Iron Sodium Potassium Magnesium Iron Sodium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a ‘green house gas’ ? Carbon dioxide Methane Chlorofluorocarbons Nitrogen Carbon dioxide Methane Chlorofluorocarbons Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused by the pollution of environment by Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide Ozone and Carbon dioxide Carbon monoxide and Carbon dioxide Carbon dioxide and Nitrogen Nitrous oxide and Sulphur dioxide Ozone and Carbon dioxide Carbon monoxide and Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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