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Question

The other name of lamp black is


A

coke

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B

charcoal

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C

soot

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D

gas carbon

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Solution

The correct option is C

soot


Explanation of the correct option:

  • The other name of lampblack is soot.
  • It is an amorphous allotrope of Carbon.

Explanation of the incorrect option:

  • The residue left after the destructive distillation of coal is called coke. Coke burns without smoke. This makes it a good fuel as it creates less pollution.
  • When dead organic matter is subjected to heating in the absence of air, charcoal is obtained. It is a soft, brittle and porous solid.
  • After the destructive distillation of coal, a thick deposit is left on the sides and roof of the container. It is called gas carbon.

Therefore, option (c) is correct.


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