chemical effects of electric current class 8 mcq

Volume - Volume relations use a hypothesis proposed by 1. boyle 2. charles 3. gaylussac 4. avogadro

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Chemical equation represents the shorthand notation of 1. only the reactants present in the chemical change 2. only the reactants products in the chemical change 3. all reactants and products present in a chemical change 4. only volumes of gases at S.T.P

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Weight - Volume relations used the concept 1. Volume occupied by one mole of gas at 30 c and 1000 mm of Hg pressure 2. Volume occupied by one mole of a gas of STP 3. Volume occupied by two moles of gas at STP 4. Volume occupied by one mole of liquid at S.T.P.

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The upward arrow indicates 1. Gas 2. Precipitate 3. Liquid 4. Crystals

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