Chemistry Major portion of the earth’s crust is mainly constituted by Oxygen and Iron Oxygen and Silicon Silicon and Aluminium Silicon and Iron Oxygen and Iron Oxygen and Silicon Silicon and Aluminium Silicon and Iron 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 Increasing the average global temperature in recent years Higher rate of photosynthesis Supplying oxygen for people travelling in jets Checking the penetration of ultra-violet rays to the earth Increasing the average global temperature in recent years Higher rate of photosynthesis Supplying oxygen for people travelling in jets ANSWER DOWNLOAD EXAMIANS APP
Chemistry The major harmful gas emitted by automobile vehicle which causes air pollution is Carbon dioxide Ozone gas Methane Carbon Monoxide Carbon dioxide Ozone gas Methane Carbon Monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following is used as a catalyst in the production of high octane fuels? HNO3 HF H2SO4 HCl HNO3 HF H2SO4 HCl ANSWER DOWNLOAD EXAMIANS APP
Chemistry The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is cineole geraniol engenol limonene cineole geraniol engenol limonene ANSWER DOWNLOAD EXAMIANS APP
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