Volume - Volume relations use a hypothesis proposed by1. boyle2. charles3. gaylussac4. avogadro
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Chemical equation represents the shorthand notation of1. only the reactants present in the chemical change2. only the reactants products in the chemical change3. all reactants and products present in a chemical change4. only volumes of gases at S.T.P
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Weight - Volume relations used the concept1. Volume occupied by one mole of gas at 30 c and 1000 mm of Hg pressure2. Volume occupied by one mole of a gas of STP3. Volume occupied by two moles of gas at STP4. Volume occupied by one mole of liquid at S.T.P.
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The upward arrow indicates1. Gas2. Precipitate3. Liquid4. Crystals
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The study of quantitative relationship in chemical reactions is called1. Stoichiometry2. Electrometry3. Volumetry4. None
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The downward arrow represents1. Gas2. Precipitate3. Liquid4. Crystals
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Energy is released in one of the following reactions.1. Decomposition reactions2. Endothermic reactions3. Exothermic reactions4. None of these
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Plants synthesise one of the following during photosynthesis.1. Hydrogen2. Chlorophyl3. Water vapour4. Starch
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Formation of nitric oxide is an example for1. endothermic reaction2. exothermic reaction3. both (1) and (2)4. none of these