Chemistry The presence of ozone in the stratosphere is responsible for 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 Higher rate of photosynthesis ANSWER DOWNLOAD EXAMIANS APP
Chemistry Browning of paper in old books is caused by Frequent use Lack of aeration Oxidation of cellulose Collection of dust Frequent use Lack of aeration Oxidation of cellulose Collection of dust ANSWER DOWNLOAD EXAMIANS APP
Chemistry Antacids are found in drugs that give relief to Stomach ache Eye sight Acne Headache Stomach ache Eye sight Acne Headache ANSWER DOWNLOAD EXAMIANS APP
Chemistry Quartz is made of Sodium Silicate Sodium Sulphate Calcium Sulphate Calcium Silicate Sodium Silicate Sodium Sulphate Calcium Sulphate Calcium Silicate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Limestone is a raw material used by which industry? Petrochemicals Fertilizers Cement Aluminium Petrochemicals Fertilizers Cement Aluminium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Copper Chromium Cadmium Lead Copper Chromium Cadmium Lead ANSWER DOWNLOAD EXAMIANS APP
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