Answer true or false.
Synthetic fibres are made by using petrochemical as raw materials.

Explanation

**Step-by-Step Solution:**

1. **Understanding Synthetic Fibres**: Synthetic fibres are man-made fibres that are produced through chemical processes in laboratories. They are not derived from natural sources like cotton or wool.

2. **Raw Materials Used**: The primary raw materials used for the production of synthetic fibres are petrochemicals. Petrochemicals are chemical products derived from petroleum (crude oil) and natural gas.

3. **Examples of Petrochemicals**: Common petrochemicals used in the production of synthetic fibres include substances derived from coal, oil, and natural gas. For instance, chemicals like sodium hydroxide and carbon disulfide are involved in the manufacturing process.

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