Chemistry The most abundant element by number in the living system is : Hydrogen Nitrogen Carbon Oxygen Hydrogen Nitrogen Carbon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Supersonic jet causes pollution by thinning of SO2 layer O3 layer O 2 layer CO2 layer SO2 layer O3 layer O 2 layer CO2 layer ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used in the artificial ripening of fruits is Methane Acetylene Ethane Butane Methane Acetylene Ethane Butane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercially, sodium bicarbonate is known as Bleaching powder Soda ash Washing soda Baking soda Bleaching powder Soda ash Washing soda Baking soda ANSWER DOWNLOAD EXAMIANS APP
Chemistry PVC is obtained by the polymerisation of Styrene Propane Vinyl chloride Acetylene Styrene Propane Vinyl chloride Acetylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source of naphthalene is Diesel Charcoal Camphor Coal-tar Diesel Charcoal Camphor Coal-tar ANSWER DOWNLOAD EXAMIANS APP
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