Chemistry Which one is a soluble salt in H2O CuS CaCl2 Zn(OH)2 PbCl2 CuS CaCl2 Zn(OH)2 PbCl2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Impure camphor is purified by Sublimation Fractional crystallisation Fractional distillation Steam distillation Sublimation Fractional crystallisation Fractional distillation Steam distillation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Commercial nitric acid is coloured because it contains dissolved : Coloured impurities Nitrogen dioxide Nitrous oxide Oxygen Coloured impurities Nitrogen dioxide Nitrous oxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The chief source of naphthalene is Camphor Coal-tar Diesel Charcoal Camphor Coal-tar Diesel Charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemistry The minimum energy required for an effective collision is Activation energy Free energy Threshold energy Internal energy Activation energy Free energy Threshold energy Internal energy ANSWER DOWNLOAD EXAMIANS APP
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