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Which of the following does not involve ...

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

Text Solution

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The correct Answer is:
D
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LAKHMIR SINGH & MANJIT KAUR-CHEMICAL REACTIONS AND EQUATIONS -Exercise
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  2. One of the following does not happen during a chemical reaction. This ...

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  3. Which of the following does not involve a chemical reaction?

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  4. You are given the solution of lead nitrate. In order to obtain a yello...

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  5. An acid which can decolourise purple coloured potassium permanganate s...

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  6. The chemical reaction between two substances is characterised by a cha...

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  7. The chemical reaction between quicklime and water is characterised by ...

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  8. One of the following is an endothermic reaction. This is :

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  9. Which of the following is not an endothermic reaction ?

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  10. One of the following is an exothermic reaction. This is

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  11. The chemical equations are balanced to satisfy one of the following la...

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  12. When the solution of substance X is added to a solution of potassium i...

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  13. When water is added gradually to a white solid X, a hissing sound is h...

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  14. When metal X is treated with a dilute acid Y, then a gas Z is evolved ...

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  15. A silver-white metal X taken in the form of ribbon, when ignited, burn...

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  16. A metal X forms a salt XSO(4). The sale XSO(4) forms a clear solution ...

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  17. The metal M reacts vigorously with water to from a solution S and a ga...

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  18. When a mixture of gases X and Y is compressed to 300 atm pressure and ...

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  19. The white solid compound A decomposes quite rapidly on heating in the ...

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  20. Gas A, which is the major cause of global warming, combines with hydro...

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