Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 CuO CuCO3 Cu(OH)2 Cu(NO3)2 CuSO4 CuO CuCO3 Cu(OH)2 Cu(NO3)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Barium peroxide Sodium peroxide Ozone Hydrogen peroxide Barium peroxide Sodium peroxide Ozone Hydrogen peroxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Substitution reaction None of the options Elimination reaction Addition reaction Substitution reaction None of the options Elimination reaction Addition reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following acids is used in battery ? Sulphurous acid Sulphuric acid Hydrochloric acid Hydrofluoric acid Sulphurous acid Sulphuric acid Hydrochloric acid Hydrofluoric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is used to make light weight, but strong plastic ? Methyl Methacrylate Nylon Polythene Polyvinyl Chloride Methyl Methacrylate Nylon Polythene Polyvinyl Chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Haloarenes are more stable than haloalkanes due to Hyper conjugative effect Inductive effect All of them Resonance effect Hyper conjugative effect Inductive effect All of them Resonance effect ANSWER DOWNLOAD EXAMIANS APP
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