Chemistry The presence of ozone in the stratosphere is responsible for Higher rate of photosynthesis Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years Checking the penetration of ultra-violet rays to the earth Higher rate of photosynthesis Supplying oxygen for people travelling in jets Increasing the average global temperature in recent years Checking the penetration of ultra-violet rays to the earth ANSWER DOWNLOAD EXAMIANS APP
Chemistry Wood spirit is Butyl alcohol Methyl alcohol Ethyl alcohol Propyl alcohol Butyl alcohol Methyl alcohol Ethyl alcohol Propyl alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant inert gas in the atmosphere is Helium Neon Argon Krypton Helium Neon Argon Krypton ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide Aluminium sulphide Hydrogenated wafers Aluminium phosphide Hydrogen sulphide ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Silicon Calcium Nitrogen Oxygen Silicon Calcium Nitrogen Oxygen ANSWER DOWNLOAD EXAMIANS APP
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