Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Uninterrupted power supply (UPS) Generator Battery Power transmittor Uninterrupted power supply (UPS) Generator Battery Power transmittor ANSWER DOWNLOAD EXAMIANS APP
Chemistry Impure camphor is purified by Sublimation Steam distillation Fractional distillation Fractional crystallisation Sublimation Steam distillation Fractional distillation Fractional crystallisation ANSWER DOWNLOAD EXAMIANS APP
Chemistry The mass number of a nucleus is the sum of the number of protons and neutrons present in the nucleus always less than its atomic number always more than the atomic weight a fraction the sum of the number of protons and neutrons present in the nucleus always less than its atomic number always more than the atomic weight a fraction ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following metals is used to galvanise iron ? Lead Zinc Copper Mercury Lead Zinc Copper Mercury ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is a major green house gas? Carbon dioxide Freon Carbon monoxide Chloro fluorocarbon Carbon dioxide Freon Carbon monoxide Chloro fluorocarbon ANSWER DOWNLOAD EXAMIANS APP
Chemistry The elements with atomic numbers 9, 17, 35, 53, 85 are all Noble gases Light metals Heavy metals Halogens Noble gases Light metals Heavy metals Halogens ANSWER DOWNLOAD EXAMIANS APP
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