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Q.

Which of the following does/do not produce a flame on burning?


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a

All of the above 

b

Wax candle

c

Camphor

d

Charcoal

answer is B.

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Detailed Solution

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When burning, charcoal doesn't produce a flame.
Charcoal does not vapourize and thus does not produce a flame. Charcoal is a combustible fuel that is commonly used in the home. Flame is produced by the substance that vapourises during combustion. For example, wax, petrol, and kerosene. A flame is a region where gaseous substances are burned or combusted.
 
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