Chemistry Which of the following is used in making smoke bombs? Phosphorus Carbon Sulphur Hydrogen Phosphorus Carbon Sulphur Hydrogen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The presence of ozone in the stratosphere is responsible for Checking the penetration of ultra-violet rays to the earth Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years Higher rate of photosynthesis Checking the penetration of ultra-violet rays to the earth Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years Higher rate of photosynthesis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Vulcanized rubber contains sulphur 0.02 3-5% 7-9% 10-15% 0.02 3-5% 7-9% 10-15% ANSWER DOWNLOAD EXAMIANS APP
Chemistry The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of an oxidation reaction an addition reaction a condensation reaction an elimination reaction an oxidation reaction an addition reaction a condensation reaction an elimination reaction ANSWER DOWNLOAD EXAMIANS APP
Chemistry The name of unreactive gas is Hydrogen Nitrogen Oxygen Carbon dioxide Hydrogen Nitrogen Oxygen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The lustre of the metals is because of High density, due to closed packing of atoms Reflection of light due to the presence of free electrons High polish Absorption of light due to the presence of cavities High density, due to closed packing of atoms Reflection of light due to the presence of free electrons High polish Absorption of light due to the presence of cavities ANSWER DOWNLOAD EXAMIANS APP
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