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