Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO CuSO4 CuCO3 Cu(OH)2 Cu(NO3)2 CuO ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the main nitrogenous waste in humans ? Ammonia Uric Acid Urea Ammonium Nitrate Ammonia Uric Acid Urea Ammonium Nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which is known as carbolic acid? Phenol Acetic acid Oxalic acid Ethanol Phenol Acetic acid Oxalic acid Ethanol ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the maximum Water Vapour content in the atmosphere? 5 to 6 per cent 4 to 5 per cent 2 to 3 per cent 3 to 4 per cent 5 to 6 per cent 4 to 5 per cent 2 to 3 per cent 3 to 4 per cent ANSWER DOWNLOAD EXAMIANS APP
Chemistry Sodium vapour lamps glow with yellow colour. This is due to The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum The low ionisation energy of sodium sublimation of sodium to emit yellow colour Its ability to absorb all other colours except yellow ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the maximum number of electrons that can be present in M-shell? 8 18 2 32 8 18 2 32 ANSWER DOWNLOAD EXAMIANS APP
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