Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuCO3 Cu(OH)2 CuO Cu(NO3)2 CuSO4 CuCO3 Cu(OH)2 CuO Cu(NO3)2 CuSO4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The polymer used in making plastic crockery is Nylon Melamine Bakelite Decron Nylon Melamine Bakelite Decron ANSWER DOWNLOAD EXAMIANS APP
Chemistry The manufacture of iron from iron ore involves the process of Reduction Electrolysis Fractional distillation Oxidation Reduction Electrolysis Fractional distillation Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas used to extinguish fire is Neon Carbon dioxide Carbon monoxide Nitrogen Neon Carbon dioxide Carbon monoxide Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Molasses a by-product in the manufacture of sugar, is converted into Paper Alcohol Fuel Pulp Paper Alcohol Fuel Pulp ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which gas is most stable at room temperature O2 N2 F2 H2 O2 N2 F2 H2 ANSWER DOWNLOAD EXAMIANS APP
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