Chemistry Supersonic jet causes pollution by thinning of O3 layer SO2 layer O 2 layer CO2 layer O3 layer SO2 layer O 2 layer CO2 layer ANSWER DOWNLOAD EXAMIANS APP
Chemistry The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of an oxidation reaction a condensation reaction an elimination reaction an addition reaction an oxidation reaction a condensation reaction an elimination reaction an addition reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The property of hydrogen which distinguishes it from alkali metals is Its electropositive character Its non-metallic character Its reducing character Its affinity for non-metal Its electropositive character Its non-metallic character Its reducing character Its affinity for non-metal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Periodic table contains how many groups 18 17 16 19 18 17 16 19 ANSWER DOWNLOAD EXAMIANS APP
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 Which of the following metals causes Itai-Itai disease ? Cobalt Cadmium Chromium Copper Cobalt Cadmium Chromium Copper ANSWER DOWNLOAD EXAMIANS APP
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