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Amorphous Forms

On placing a ...

Question

On placing a glass sheet above a burning kerosene lamp, Naina observed a black coloured substance being formed on it as shown below. This black coloured substance is ______.

A

lampblack

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B

plant charcoal

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C

activated charcoal

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D

coal

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Solution

The correct option is A lampblack
Lampblack is an amorphous form of carbon formed due to the incomplete combustion of carbon compounds. In the given situtation, lampblack is formed due to the incomplete combustion of kerosene oil present in the lamp.

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