Chemistry Which is the purest commercial form of iron ? Wrought iron Steel Pig iron Stainless steel Wrought iron Steel Pig iron Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Chemistry In deep-sea diving, divers use a mixture of gases consisting of oxygen and Argon Helium Hydrogen Nitrogen Argon Helium Hydrogen Nitrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical name of common salt is Sodium Bicarbonate Sodium Sodium Oxide Sodium Chloride Sodium Bicarbonate Sodium Sodium Oxide Sodium Chloride ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of ozone in the stratosphere is responsible for Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Increasing the average global temperature in recent years Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth ANSWER DOWNLOAD EXAMIANS APP
Chemistry The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of a condensation reaction an elimination reaction an oxidation reaction an addition reaction a condensation reaction an elimination reaction an oxidation reaction an addition reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? The heat required for combustion of petrol is very low Petrol is too inflammable to be extinguished by water The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns The heat required for combustion of petrol is very low Petrol is too inflammable to be extinguished by water The oxygen content of water is isolated by petrol and thus it helps in burning Water, being heavy, slips below petrol which thus remains in contact with air and burns ANSWER DOWNLOAD EXAMIANS APP
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