Chemistry The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind? 1/3 1/4 1/8 1/6 1/3 1/4 1/8 1/6 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. sulphuric acid and conc. nitric acid Conc. hydrochloric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid Conc. sulphuric acid and conc. nitric acid Conc. hydrochloric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. nitric acid and conc. sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Acid rain is caused due to emission of which of the following in to the atmosphere ? Carbon dioxide and carbon monoxide Ozone and carbon dioxide Oxides of nitrogen and sulphur Carbon monoxide and nitrogen Carbon dioxide and carbon monoxide Ozone and carbon dioxide Oxides of nitrogen and sulphur Carbon monoxide and nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Haloarenes are more stable than haloalkanes due to Inductive effect Hyper conjugative effect Resonance effect All of them Inductive effect Hyper conjugative effect Resonance effect All of them ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who first published the periodic table John Dalton Henry Moseley Julius Lothar Meyer Dmitri Mendeleev John Dalton Henry Moseley Julius Lothar Meyer Dmitri Mendeleev ANSWER DOWNLOAD EXAMIANS APP
Chemistry The length of double bond is _______ than single bond Longer None of these Shorter Of same lenght Longer None of these Shorter Of same lenght ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS