Identify the naturally formed amorphous form of carbon from the following.
Identify the naturally formed amorphous form of carbon from the following.
The correct option is A Coal
Explanation for correct option:
(A) Out of all these forms only coal is the naturally occurring amorphous form of carbon. The formation of coal takes millions of years as they formed from the decomposition of inorganic matter deep inside the earth under high temperature, high pressure and absence of air.
Explanation for incorrect options:
All other forms mentioned here are man-made amorphous forms of carbon.
(B) Gas carbon is prepared by destructive distillation of coal or by heating hydrocarbons in a closed container under high temperature and gets deposited along the walls of container as a greyish substance.
(C) Coke is the derivative product that can be prepared from the coal itself by heating soft coal in absence of air and subsequently adding some impurities to it.
(D) Lampblack is formed when hydrocarbons are burned under a limited supply of oxygen. During the process of formation of lampblack, it gets deposited as a fine black powder.
Thus, option (A) is correct. The naturally formed amorphous form of carbon is coal.
Coal
Explanation for correct option:
(A) Out of all these forms only coal is the naturally occurring amorphous form of carbon. The formation of coal takes millions of years as they formed from the decomposition of inorganic matter deep inside the earth under high temperature, high pressure and absence of air.
Explanation for incorrect options:
All other forms mentioned here are man-made amorphous forms of carbon.
(B) Gas carbon is prepared by destructive distillation of coal or by heating hydrocarbons in a closed container under high temperature and gets deposited along the walls of container as a greyish substance.
(C) Coke is the derivative product that can be prepared from the coal itself by heating soft coal in absence of air and subsequently adding some impurities to it.
(D) Lampblack is formed when hydrocarbons are burned under a limited supply of oxygen. During the process of formation of lampblack, it gets deposited as a fine black powder.
Thus, option (A) is correct. The naturally formed amorphous form of carbon is coal.
