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Endothermic and Exothermic Reaction

Which of the ...

Question

Which of the following reactions are exothermic in nature?

A

Evaporation of water

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B

Dissolution of sodium hydroxide in water

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C

Dilution of sulphuric acid

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D

Combustion of methane gas

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Solution

The correct option is D Combustion of methane gas
Dissolution of sodium hydroxide in water, dilution of sulphuric acid and combustion of methane gas are exothermic reactions in which a large amount of heat is released.

Evaporation of water is endothermic reaction in which heat is absorbed.

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Q. Select the correct alternative.

Which of the following reactions are exothermic in nature?

Q. Nuclear reactions are exothermic in nature and produce large amount of energy.

Q. (a) What do you understand by exothermic and endothermic reactions?
(b) Give one example of an exothermic reaction and one of an endothermic reaction.
(c) Which of the following are endothermic reactions and which are exothermic reactions?
(i) Burning of natural gas
(ii) Photosynthesis
(iii) Electrolysis of water
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Which of the following reactions are exothermic in nature?

(i) Evaporation of water
(ii) Dissolution of sodium hydroxide in water
(iii) Dilution of sulphuric acid
(iv) Dissolution of ammonium chloride in water
(v) Combustion of methane gas

Q. Which of the following changes is exothermic in nature?

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