Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is found in chlorophyll ? Fe2+ A l3+ Ca2+ Mg2+ Fe2+ A l3+ Ca2+ Mg2+ ANSWER DOWNLOAD EXAMIANS APP
Chemistry Alum is used as A purifier for water A fertilizer An analgesic A disinfectant A purifier for water A fertilizer An analgesic A disinfectant ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Carbon dioxide Oxides of sulphur Carbon monoxide Oxides of nitrogen Carbon dioxide Oxides of sulphur Carbon monoxide Oxides of nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Synthetic detergents are prepared from Glycerides Sodium salts of higher fattyacids Potassium salts of higher fatty-acids Hydrocarbons of petroleum Glycerides Sodium salts of higher fattyacids Potassium salts of higher fatty-acids Hydrocarbons of petroleum ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following substances all carbon atoms are quaternary in nature ? Teflon Napthalene Diamond Graphite Teflon Napthalene Diamond Graphite ANSWER DOWNLOAD EXAMIANS APP
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