Producer gas is got through the process of
(a) Fermentation
(b) Combustion
(c) Pyrolysis
(d) Carbonisation

Options

A. Fermentation
B. Combustion
C. Pyrolysis
D. Carbonisation

Answer

To determine the correct process through which producer gas is obtained, we can analyze each of the given options step by step.

### Step 1: Understanding Producer Gas
Producer gas is a mixture of gases that is produced by the partial combustion of carbonaceous materials, such as coal or coke, in the presence of limited air and moisture.

### Step 2: Analyzing the Options
Let's evaluate each option:

(a) **Fermentation**: This process involves the conversion of sugars into alcohol and carbon dioxide by microorganisms. It is not related to the production of producer gas.

(b) **Combustion**: This is a chemical process where a substance reacts with oxygen to produce heat and light. In the case of producer gas, coke or coal burns in the presence of air, producing a gas mixture that includes carbon monoxide, hydrogen, carbon dioxide, and nitrogen.

(c) **Pyrolysis**: This is the thermal decomposition of materials at elevated temperatures in an inert atmosphere. While it involves breaking down organic materials, it does not specifically produce producer gas.

(d) **Carbonisation**: This process involves the conversion of organic materials into carbon-rich products (like charcoal) through heating in the absence of air. It does not produce producer gas.

### Step 3: Conclusion
Based on the analysis, the correct process through which producer gas is obtained is **(b) Combustion**.

### Final Answer
**(b) Combustion**

---