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