Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Water Oxides of mineral elements Carbonates from soil Carbon dioxide Water Oxides of mineral elements Carbonates from soil Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mercury is emitted into air by Burning coal Burning garbage Coal fire Steam engine Burning coal Burning garbage Coal fire Steam engine ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is biodegradable ? D.T. Paper Plastic Aluminium D.T. Paper Plastic Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Asbestos is formed of : Calcium and Magnesium Calcium and Zinc Copper, Zinc and Manganese Lead and Iron Calcium and Magnesium Calcium and Zinc Copper, Zinc and Manganese Lead and Iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry When formaldehyde and potassium hydroxide are heated, we get Acetylene Methyl alcohol Ethyl formate Methane Acetylene Methyl alcohol Ethyl formate Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in the manufacture of lead pencil is Lead Mica Graphite Carbon Lead Mica Graphite Carbon ANSWER DOWNLOAD EXAMIANS APP
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