Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. nitric acid and conc. sulphuric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. hydrochloric acid and conc. nitric acid Conc. nitric acid and conc. sulphuric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. hydrochloric acid Conc. hydrochloric acid and conc. nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers, etc. ? Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead Nickel and cadmium Iron and cadmium Zinc and carbon Lead peroxide and lead ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following nonmetals shows allotropy in the liquid state? Sulphur Bromine Carbon Phosphorous Sulphur Bromine Carbon Phosphorous ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most electropositive elements among the following is K Ca Cs Na K Ca Cs Na ANSWER DOWNLOAD EXAMIANS APP
Chemistry The reaction intermediate formed during the preparation of diethylether from ethanol by treatment with H2SO4 is Carbanion Free radical Carbene Carbocation Carbanion Free radical Carbene Carbocation ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a noble gas ? Argon Hydrogen Neon Helium Argon Hydrogen Neon Helium ANSWER DOWNLOAD EXAMIANS APP
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