Chemistry Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives Hydrogen at cathode and oxygen at anode Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper Hydrogen at cathode and oxygen at anode Copper at anode and oxygen at cathode. Copper at cathode and oxygen at anode Copper at cathode and anodes dissolve to give copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ozone layer of atmosphere absorbs: Ultraviolet rays Infra-red rays Cosmic rays. All radiations of Light Ultraviolet rays Infra-red rays Cosmic rays. All radiations of Light ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following forms of phosphorus is most reactive? Violet phosphorus Black phosphorus Red phosphorus White phosphorus Violet phosphorus Black phosphorus Red phosphorus White phosphorus ANSWER DOWNLOAD EXAMIANS APP
Chemistry The items amenable to detection by soft x-rays are narcotics genuine coins from counterfeit coins contrabands lead in bullets narcotics genuine coins from counterfeit coins contrabands lead in bullets ANSWER DOWNLOAD EXAMIANS APP
Chemistry Who first published the periodic table Dmitri Mendeleev Henry Moseley John Dalton Julius Lothar Meyer Dmitri Mendeleev Henry Moseley John Dalton Julius Lothar Meyer ANSWER DOWNLOAD EXAMIANS APP
Chemistry In which of the following ions , the colour is not due to d-d transition ? [Cu(NH3)4]2+ [CoF6]3+ [Ti(H2O)6]3+ [CrO4]2− [Cu(NH3)4]2+ [CoF6]3+ [Ti(H2O)6]3+ [CrO4]2− ANSWER DOWNLOAD EXAMIANS APP
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