Chemistry The most abundant element in the earth’s atmosphere is Nitrogen Argon Krypton Oxygen Nitrogen Argon Krypton Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metallic constituents of hard water are : Magnesium, calcium and tin Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron Magnesium, calcium and tin Iron, tin and calcium Magnesium, tin and iron Calcium, magnesium and iron ANSWER DOWNLOAD EXAMIANS APP
Chemistry Two moles of an ideal gas expand freely into vacuum. The work done by the gas is 2J Infinity 4J 2J Infinity 4J ANSWER DOWNLOAD EXAMIANS APP
Chemistry The gas liberated in the Bhopal gas tragedy was: Pheynl isocynate Acetylene Methyl isocynate Ethylene Pheynl isocynate Acetylene Methyl isocynate Ethylene ANSWER DOWNLOAD EXAMIANS APP
Chemistry The buffer action of blood is due to the presence of CI– and [CO3]2– HCI and NaCI [HCO3]– and H2CO3 CI– and [HCO3]– CI– and [CO3]2– HCI and NaCI [HCO3]– and H2CO3 CI– and [HCO3]– ANSWER DOWNLOAD EXAMIANS APP
Chemistry Permanent – hardness of water may be removed by addition of Lime Potassium Permangante Sodium carbonate Alum Lime Potassium Permangante Sodium carbonate Alum ANSWER DOWNLOAD EXAMIANS APP
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