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Stoichiometry

Which of the ...

Question

Which of the following does not involve a chemical reaction?

A

Process of respiration

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B

Digestion of food in our body

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C

Burning of candle wax when heated

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D

Melting of candle wax on heating

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Solution

The correct option is D Melting of candle wax on heating
Melting of candle wax on heating is an example of physical change no chemical reaction is taking place only the change of state from solid to liquid state.

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Similar questions

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

Q. Burning of candle involves _________ of wax.

Q. Which of the following happen when a wax candle is burnt

Q. On burning a candle, chemical energy of the wax is converted to light energy.

Q. Assertion :The burning of a candle is both a physical and a chemical change. Reason: Burning of candle melts the wax and hence physical state of wax has changed from solid to liquid. Again the wax combines with the atmosphere oxygen and changes to carbon dioxide, heat and light.

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