Chemistry Browning of paper in old books is caused by Frequent use Lack of aeration Oxidation of cellulose Collection of dust Frequent use Lack of aeration Oxidation of cellulose Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Halogens Noble gases Light metals Heavy metals Halogens Noble gases Light metals Heavy metals ANSWER DOWNLOAD EXAMIANS APP
Chemistry By-product obtained by soap industry is Caustic potash Naphthalene Glycerol Caustic soda Caustic potash Naphthalene Glycerol Caustic soda ANSWER DOWNLOAD EXAMIANS APP
Chemistry In upper layer of atmosphere ozone is formed by Subjecting oxygen to high pressure The action of ultraviolet rays on oxygen The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The action of ultraviolet rays on oxygen The combination of oxygen molecules The action of nitrogen on oxygen in atmosphere ANSWER DOWNLOAD EXAMIANS APP
Chemistry The components of water can be separated by Physical methods Both A and B They can not be separated Chemical methods Physical methods Both A and B They can not be separated Chemical methods ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a greenhouse gas ? Carbon dioxide Helium Nitrogen Sulphur dioxide Carbon dioxide Helium Nitrogen Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
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