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Which of the Following Does Not Involve a Chemical Reaction? (A) Digestion of Food in Our Body (B) Process of Respiration (C) Burning of Candle Wax When Heated (D) Melting of Candle Wax on Heating - CBSE Class 10 - Science

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Question

Which of the following does not involve a chemical reaction?
(a) digestion of food in our body
(b) process of respiration
(c) burning of candle wax when heated
(d) melting of candle wax on heating

Solution

(d) melting of candle wax on heating

On heating, wax changes only its physical state (solid to liquid), not its properties. Hence, only physical change takes place.

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APPEARS IN

 Lakhmir Singh Solution for Chemistry for Class 10 (2019 Exam) (2018 to Current)
Chapter 1: Chemical Reactions and Equations
Q: 37 | Page no. 21
Solution Which of the Following Does Not Involve a Chemical Reaction? (A) Digestion of Food in Our Body (B) Process of Respiration (C) Burning of Candle Wax When Heated (D) Melting of Candle Wax on Heating Concept: Chemical Equation.
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