Chemistry The most abundant element by number in the living system is : Oxygen Hydrogen Nitrogen Carbon Oxygen Hydrogen Nitrogen Carbon 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 Among the following the hardest metal is Iron Platinum Tungsten Gold Iron Platinum Tungsten Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry The product, 9-nitroanthracene is obtained from anthracene by the action of Nitric acid and acetic acid Nitric acid and acetic anhydride Nitric acid and ethyl alcohol Nitric acid in excess Nitric acid and acetic acid Nitric acid and acetic anhydride Nitric acid and ethyl alcohol Nitric acid in excess ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alum stops bleeding in minor cuts because of Emulsion Dialysis Solvation Coagulation Emulsion Dialysis Solvation Coagulation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercially, sodium bicarbonate is known as Soda ash Baking soda Washing soda Bleaching powder Soda ash Baking soda Washing soda Bleaching powder ANSWER DOWNLOAD EXAMIANS APP
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