Chemistry Mercury is emitted into air by Burning garbage Coal fire Steam engine Burning coal Burning garbage Coal fire Steam engine Burning coal ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is a man-made source of air pollution ? Forest fire Bacterial action in soil and swamp areas All of these Automobile exhaust Forest fire Bacterial action in soil and swamp areas All of these Automobile exhaust ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is the best fuel in terms of energy released per gram of fuel? Butane Ethanol Hydrogen Methane Butane Ethanol Hydrogen Methane ANSWER DOWNLOAD EXAMIANS APP
Chemistry Two moles of an ideal gas expand freely into vacuum. The work done by the gas is 4J 2J Infinity 4J 2J Infinity ANSWER DOWNLOAD EXAMIANS APP
Chemistry The process of removing calcium and magnesium from hard water is known as Filtration Flocculation Sedimentation Water softening Filtration Flocculation Sedimentation Water softening ANSWER DOWNLOAD EXAMIANS APP
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