Chemistry Copper substances when exposed to air gains a green coating due to the formation of: CuCO3 Cu(OH)2 CuSO4 CuO Cu(NO3)2 CuCO3 Cu(OH)2 CuSO4 CuO Cu(NO3)2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following gases is present under pressure in soft drinks? Carbon dioxide Oxygen Nitrogen Nitrous oxide Carbon dioxide Oxygen Nitrogen Nitrous oxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The term 'brown air' is used for Photochemical smog Acid fumes Industrial smog Sulphurous smog Photochemical smog Acid fumes Industrial smog Sulphurous smog ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the chemical name for ‘Baking Soda’ ? Sodium carbonate Sodium bicarbonate Sodium nitrite Sodium nitrate Sodium carbonate Sodium bicarbonate Sodium nitrite Sodium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Activated Charcoal is used to remove colouring matter from pure substances by Bleaching Adsorption Reduction Oxidation Bleaching Adsorption Reduction Oxidation ANSWER DOWNLOAD EXAMIANS APP
Chemistry 'Atomic theory' of matter was given by Newton Dalton Pascal Avogadro Newton Dalton Pascal Avogadro ANSWER DOWNLOAD EXAMIANS APP
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