Chemistry Which one of the following metals pollutes the air of a city having large number of automobiles? Cadmium Chromium Lead Copper Cadmium Chromium Lead Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The most abundant element is Nitrogen Oxygen Calcium Silicon Nitrogen Oxygen Calcium Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metal chiefly used for galvanising iron is : Cadmium Mercury Tin Zinc Cadmium Mercury Tin Zinc ANSWER DOWNLOAD EXAMIANS APP
Chemistry What is the element required for solar energy conversion ? Tantalum Beryllium Ultra pure carbon Silicon Tantalum Beryllium Ultra pure carbon Silicon ANSWER DOWNLOAD EXAMIANS APP
Chemistry Soap helps in better cleaning of clothes because It gives strength to solution Soap acts like catalyst It absorbs the dirt It reduces the surface tension of solution It gives strength to solution Soap acts like catalyst It absorbs the dirt It reduces the surface tension of solution ANSWER DOWNLOAD EXAMIANS APP
Chemistry When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocating of pond that does not leave enough oxygen needed to support life. This type of pollution is called Green house effect Eutrophication Smog None of these Green house effect Eutrophication Smog None of these ANSWER DOWNLOAD EXAMIANS APP
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