Question

A thermal decomposition reaction is called pyrolysis.

• A. True
• B. False

Answer 1

The correct option is A True

1. Pyrolysis is the process of decomposition of a compound by heat in the absence of air.
2. When this takes place in alkanes, we call it cracking.
3. For example, Alkanes on heating under high temperature or in the presence of a catalyst in the absence of air broken down into lower alkanes and hydrogen.

$$\begin{gathered} {\mathrm{CH}}_4\left(\mathrm{g}\right)\stackrel{1000°\mathrm{C}}{\to }\mathrm{C}\left(\mathrm{s}\right)+2{\mathrm{H}}_2\left(\mathrm{g}\right) \\ \left(\mathrm{Methane}\right)\left(\mathrm{Carbon}\right)\left(\mathrm{Hydrogen}\right) \end{gathered}$$

Therefore, the given statement- A thermal decomposition reaction is called pyrolysis is true.