Chemistry Browning of paper in old books is caused by Frequent use Lack of aeration Collection of dust Oxidation of cellulose Frequent use Lack of aeration Collection of dust Oxidation of cellulose ANSWER DOWNLOAD EXAMIANS APP
Chemistry The number of g-molecule of oxygen in 6.02 x 1024CO molecules is 1 gram of molecule 10 gram of molecule 5 gram of molecule 0.5 gram of molecule 1 gram of molecule 10 gram of molecule 5 gram of molecule 0.5 gram of molecule ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is also known as solution ? A homogeneous mixture A compound A suspension A heterogeneous mixture A homogeneous mixture A compound A suspension A heterogeneous mixture ANSWER DOWNLOAD EXAMIANS APP
Chemistry Catalyst is a substance which 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 Has no action on the rate of the reaction None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following elements is non-radioactive ? Thorium Zirconium Uranium Plutonium Thorium Zirconium Uranium Plutonium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used for refrigeration? Chlorine Freon Phosphine Sulphur dioxide Chlorine Freon Phosphine Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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