Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/3 1/6 1/4 1/8 1/3 1/6 1/4 1/8 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be 1 : 1 : 1 2 : 16 : 1 2 : 16 : 2 1 : 16 : 2 1 : 1 : 1 2 : 16 : 1 2 : 16 : 2 1 : 16 : 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Combustion of a candle is a/an Photochemical reaction Endothermic reaction Exothermic reaction Physical change Photochemical reaction Endothermic reaction Exothermic reaction Physical change ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following chemicals helps in fruit ripening? Malathion Ethephon Isoproturan Atrazine Malathion Ethephon Isoproturan Atrazine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : None of the options Elimination reaction Substitution reaction Addition reaction None of the options Elimination reaction Substitution reaction Addition reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercially, sodium bicarbonate is known as Bleaching powder Soda ash Baking soda Washing soda Bleaching powder Soda ash Baking soda Washing soda ANSWER DOWNLOAD EXAMIANS APP
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