chemical reaction and equation class 10 mcq

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

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.

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

The study of quantitative relationship in chemical reactions is called 1. Stoichiometry 2. Electrometry 3. Volumetry 4. None

The downward arrow represents 1. Gas 2. Precipitate 3. Liquid 4. Crystals

Energy is released in one of the following reactions. 1. Decomposition reactions 2. Endothermic reactions 3. Exothermic reactions 4. None of these

Plants synthesise one of the following during photosynthesis. 1. Hydrogen 2. Chlorophyl 3. Water vapour 4. Starch

Formation of nitric oxide is an example for 1. endothermic reaction 2. exothermic reaction 3. both (1) and (2) 4. none of these

Formation of ammonia is an example of 1. endothermic reaction 2. exothermic reaction 3. both (1) and (2) 4. none of these

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chemical reaction and equation class 10 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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The study of quantitative relationship in chemical reactions is called 1. Stoichiometry 2. Electrometry 3. Volumetry 4. None

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The downward arrow represents 1. Gas 2. Precipitate 3. Liquid 4. Crystals

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Energy is released in one of the following reactions. 1. Decomposition reactions 2. Endothermic reactions 3. Exothermic reactions 4. None of these

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Plants synthesise one of the following during photosynthesis. 1. Hydrogen 2. Chlorophyl 3. Water vapour 4. Starch

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Formation of nitric oxide is an example for 1. endothermic reaction 2. exothermic reaction 3. both (1) and (2) 4. none of these

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Formation of ammonia is an example of 1. endothermic reaction 2. exothermic reaction 3. both (1) and (2) 4. none of these

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