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 Higher rate of photosynthesis Increasing the average global temperature in recent years Checking the penetration of ultra-violet rays to the earth Supplying oxygen for people travelling in jets Higher rate of photosynthesis Increasing the average global temperature in recent years ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the principal ore of aluminium ? Lignite Dolomite Bauxite Copper Lignite Dolomite Bauxite Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry Bauxite is used as raw material by which industry ? Steel Aluminium Iron Gold Steel Aluminium Iron Gold ANSWER DOWNLOAD EXAMIANS APP
Chemistry The enzyme that converts glucose to ethyl alcohol is : Zymase Diastase Invertase Maltase Zymase Diastase Invertase Maltase ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : H2O2 Oxalic acid Petrol Alcohol H2O2 Oxalic acid Petrol Alcohol ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in solar cells contains Caesium Tin Silicon Thallium Caesium Tin Silicon Thallium ANSWER DOWNLOAD EXAMIANS APP
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