Exothermic or endothermic

This type of question, asked 3 times: 2023, 2025, 2026. All 5 questions below, oldest first.

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Question 1
2023
1 $Which of the following is an example of endothermic process ?$
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Question 2
2025
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
17 $Assertion (A) : All exothermic reactions are accompanied with evolution of heat and light. Reason (R) : Combination reactions may or may not be exothermic.$
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Question 3
2025
27 $Explain why respiration is considered as an exothermic reaction. Give the chemical equation for this reaction.$
Question 4
2025
Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the options given below.
17 $Assertion (A) : Decomposition reactions are generally endothermic reactions. Reason (R) : Decomposition of organic matter into compost is an exothermic process.$
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Question 5
2026
18 $\mathrm{C_6H_{12}O_{6(aq)} + 6O_{2(g)} \longrightarrow 6CO_{2(g)} + 6H_2O_{(l)}}$
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Question 1