Chemistry The method that cannot be used for removing permanent hardness of water is adding sodium carbonate distillation boiling adding caustic soda adding sodium carbonate distillation boiling adding caustic soda ANSWER DOWNLOAD EXAMIANS APP
Chemistry The advantage of detergents over soaps is Detergents are soluble in water Detergents could not give much lather Detergents give lather even with hard water Soaps give lather with only soft water Detergents are soluble in water Detergents could not give much lather Detergents give lather even with hard water Soaps give lather with only soft water ANSWER DOWNLOAD EXAMIANS APP
Chemistry In chemical terms, what are alums used for purifying water for drinking purposes ? Double nitrate Nitrates of aluminium Double sulphates Hydrated chlorides Double nitrate Nitrates of aluminium Double sulphates Hydrated chlorides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Greenhouse effect is caused by Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen Carbon dioxide Carbon monoxide Nitrogen dioxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which acid is used in Lead storage battery? Sulphuric acid Nitric acid Acetic acid Hydrochloric acid Sulphuric acid Nitric acid Acetic acid Hydrochloric acid 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
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