Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 CuSO4 Cu(NO3)2 CuO CuCO3 Cu(OH)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element which is used for vulcanizing rubber Sulphur Bromine Phosphorus Silicon Sulphur Bromine Phosphorus Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Aqua regia is a 1 : 3 mixture, by volume, of Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. sulphuric acid Conc. nitric acid and conc. hydrochloric acid Conc. hydrochloric acid and conc. nitric acid Conc. sulphuric acid and conc. nitric acid Conc. nitric acid and conc. sulphuric acid Conc. nitric acid and conc. hydrochloric acid Conc. hydrochloric acid and conc. nitric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ? Ethane Butane Propane Methane Ethane Butane Propane Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry The monomer of polythene is ethylene None of these ethyl alcohol vinyl chloride ethylene None of these ethyl alcohol vinyl chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which method will be employed to test the hardness of water? Boiling None of these Distillation Formation of lather with soap Boiling None of these Distillation Formation of lather with soap ANSWER DOWNLOAD EXAMIANS APP
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