Chemistry In upper layer of atmosphere ozone is formed by The combination of oxygen molecules The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure The combination of oxygen molecules The action of ultraviolet rays on oxygen The action of nitrogen on oxygen in atmosphere Subjecting oxygen to high pressure ANSWER DOWNLOAD EXAMIANS APP
Chemistry White coal is Uranium Hydro-electricity Diamond None of these Uranium Hydro-electricity Diamond None of these ANSWER DOWNLOAD EXAMIANS APP
Chemistry Copper is refined by Roasting Electrolysis Oxidation Zone refining Roasting Electrolysis Oxidation Zone refining 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 In its reaction with silver nitrate, C2H2 shows Basic property Oxidising property Reducing property Acidic property Basic property Oxidising property Reducing property Acidic property ANSWER DOWNLOAD EXAMIANS APP
Chemistry The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is metamerism functional group isomerism chain isomerism positional isomerism metamerism functional group isomerism chain isomerism positional isomerism ANSWER DOWNLOAD EXAMIANS APP
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