Chemistry Which of the following is used in welding broken pieces of iron rails and machine parts? None of these Aluminium sulphate Aluminium powder Solder None of these Aluminium sulphate Aluminium powder Solder ANSWER DOWNLOAD EXAMIANS APP
Chemistry The term 'brown air' is used for Industrial smog Sulphurous smog Photochemical smog Acid fumes Industrial smog Sulphurous smog Photochemical smog Acid fumes ANSWER DOWNLOAD EXAMIANS APP
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 most abundant constituent of atmospheric air is : Hydrogen Nitrogen Carbon Oxygen Hydrogen Nitrogen Carbon Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Silica gel is a Flavouring agent Drying agent Delicious food Moisturizer Flavouring agent Drying agent Delicious food Moisturizer ANSWER DOWNLOAD EXAMIANS APP
Chemistry It is dangerous to leave the car engine running in a closed garage, because it may cause serious pollution due to poisoning by emission of CO CO2 SO2 Unburnt petrol CO CO2 SO2 Unburnt petrol ANSWER DOWNLOAD EXAMIANS APP
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