chemical reactions and equations class 10 mcq with answers
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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The bond energy required to break one mole of HCl is
1. 103 kcal
2. 104 kcal
3. 44 kcal
4. 300 kcal
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An example for naturally occurring endothermic reaction is
1. respiration
2. electrolysis of water
3. photosynthesis
4. none of these
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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
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