Chemistry The oxidation number of nickel in K4[Ni(CN)4] is 8 Zero –4 4 8 Zero –4 4 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Burning pyrites ore gives out Carbon dioxide gas Sulphur dioxide gas Nitrogen dioxide gas Nitric oxide gas Carbon dioxide gas Sulphur dioxide gas Nitrogen dioxide gas Nitric oxide gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry The element used for making solar cells is Magnesium Sodium Silicon Calcium Magnesium Sodium Silicon Calcium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Oxides of nitrogen Oxides of sulphur Carbon dioxide Carbon monoxide Oxides of nitrogen Oxides of sulphur Carbon dioxide Carbon monoxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry An emulsion is a colloid of a Gas in a solid Gas in a liquid Liquid in a liquid Liquid in a gas Gas in a solid Gas in a liquid Liquid in a liquid Liquid in a gas 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 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 ANSWER DOWNLOAD EXAMIANS APP
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