Chemistry The percentage of oxygen in air is approximately 0.78 1 0.21 0.01 0.78 1 0.21 0.01 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Adding Cl2 to benzene in the presence of AlCl3 is an example of : Addition reaction Elimination reaction None of the options Substitution reaction Addition reaction Elimination reaction None of the options Substitution reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most electropositive elements among the following is Cs Ca K Na Cs Ca K Na ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is not a fertilizer? Potassium nitrate Ammonium sulphate Calcium ammonium nitrate Calcium sulphate Potassium nitrate Ammonium sulphate Calcium ammonium nitrate Calcium sulphate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical properties of isotopes Need not be same Must be same Must be different Need not be different Need not be same Must be same Must be different Need not be different ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Bauxite Cinnabar Haematite Dolomite Bauxite Cinnabar Haematite Dolomite ANSWER DOWNLOAD EXAMIANS APP
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