Chemistry Of the following, which one pollutes the air of a big city ? Copper Lead Chromium Cadmium Copper Lead Chromium Cadmium ANSWER DOWNLOAD EXAMIANS APP
Chemistry Why is water not suitable for putting out a petrol fire ? Petrol is too inflammable to be extinguished by water Water, being heavy, slips below petrol which thus remains in contact with air and burns The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low Petrol is too inflammable to be extinguished by water Water, being heavy, slips below petrol which thus remains in contact with air and burns The oxygen content of water is isolated by petrol and thus it helps in burning The heat required for combustion of petrol is very low ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the process is known as nitrification? Conversion of nitrite to nitric oxide Reaction of nitrogen dioxide with water to form nitric acid Reaction of Nitrogen Monoxide with oxygen to form nitric acid Conversion of ammonia to nitrites Conversion of nitrite to nitric oxide Reaction of nitrogen dioxide with water to form nitric acid Reaction of Nitrogen Monoxide with oxygen to form nitric acid Conversion of ammonia to nitrites ANSWER DOWNLOAD EXAMIANS APP
Chemistry 24 carat of diamond is equal to 200 mg 95% mg 91% gold 200 g 200 mg 95% mg 91% gold 200 g ANSWER DOWNLOAD EXAMIANS APP
Chemistry Mixture can be Heterogeneous Pure substance Both A and B Homogeneous Heterogeneous Pure substance Both A and B Homogeneous ANSWER DOWNLOAD EXAMIANS APP
Chemistry When lime juice is dropped on baking soda, brisk effervescence takes place because the gas evolved is Oxygen All of them Hydrogen Carbon dioxide Oxygen All of them Hydrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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