Chemistry Browning of paper in old books is caused by Lack of aeration Oxidation of cellulose Collection of dust Frequent use Lack of aeration Oxidation of cellulose Collection of dust Frequent use ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which Has no action on the rate of the reaction Decreases the rate of reaction Increases the rate of the reaction None of these Has no action on the rate of the reaction Decreases the rate of reaction Increases the rate of the reaction None of these 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 ? Iron Magnesium Silicon Oxygen Iron Magnesium Silicon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used to dilute oxygen in the gas cylinders used by divers ? Argon Neon Krypton Helium Argon Neon Krypton Helium ANSWER DOWNLOAD EXAMIANS APP
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