Chemistry Browning of paper in old books is caused by Collection of dust Frequent use Oxidation of cellulose Lack of aeration Collection of dust Frequent use Oxidation of cellulose Lack of aeration ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which Has no action on the rate of the reaction None of these Decreases the rate of reaction Increases the rate of the reaction Has no action on the rate of the reaction None of these Decreases the rate of reaction Increases the rate of the reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry When quick lime is added to water No heat change takes place Heat is liberated Temperature decreases Heat is absorbed No heat change takes place Heat is liberated Temperature decreases Heat is absorbed ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element that is in the highest percentage in the composition of the earth ? Silicon Oxygen Magnesium Iron Silicon Oxygen Magnesium Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used to dilute oxygen in the gas cylinders used by divers ? Argon Krypton Helium Neon Argon Krypton Helium Neon ANSWER DOWNLOAD EXAMIANS APP
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