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Energetics MCQ for Students
Energy stored in the molecules is known as
3. Internal energy
4. Kinetic energy
Option 3 – Internal energy
Internal energy of a substance depends on
1. number of atoms present in a molecule
2. number of molecules present in a substance
3. chemical structure and physical state
4. none of these
Option 3 – chemical structure and physical state
The energy required in breaking a mole of H-H bond is
1. 104 kcal
2.62 kcal
3.57.8 kcal
4. 10.3 kcal
Option 1 – 104 kcal
An example for naturally occurring endothermic reaction is
1. respiration
2. electrolysis of water
3. photosynthesis
4. none of these
Option 3 – photosynthesis
The bond energy required to break one mole of HCl is
1. 103 kcal
2. 104 kcal
3. 44 kcal
4. 300 kcal
Option 1 – 103 kcal
Formation of ammonia is an example of
1. endothermic reaction
2. exothermic reaction
3. both (1) and (2)
4. none of these
Option 2 – exothermic reaction
Formation of nitric oxide is an example for
1. endothermic reaction
2. exothermic reaction
3. both (1) and (2)
4. none of these
Option 1 – endothermic reaction
Plants synthesise one of the following during photosynthesis.
1. Hydrogen
2. Chlorophyl
3. Water vapour
4. Starch
Option 4 – Starch
Energy is released in one of the following reactions.
1. Decomposition reactions
2. Endothermic reactions
3. Exothermic reactions
4. None of these
Option 3 – Exothermic reactions
We covered all the chemical energetics MCQ with answers above in this post for free so that you can practice well for the exam.
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