chemical reactions and equations 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

Answers in Last Page >>>

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.

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

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

Answers in Last Page >>>

The bond energy required to break one mole of HCl is 1. 103 kcal 2. 104 kcal 3. 44 kcal 4. 300 kcal

Click here to check your answers