What is LPG? Mention its main component. Why is a smelling agent added to it?

Explanation

### Step-by-Step Solution:

1. **Definition of LPG**: LPG stands for Liquefied Petroleum Gas. It is a type of fuel that is commonly used for heating, cooking, and as fuel for certain vehicles.

2. **Main Component of LPG**: The main component of LPG is **butane**. Butane is a hydrocarbon that is part of the alkane series and is one of the primary constituents of liquefied petroleum gas.

3. **Reason for Adding a Smelling Agent**: LPG is odorless in its natural state, which can pose a safety risk. To ensure safety, a smelling agent is added to LPG. This agent allows people to detect gas leaks by giving off a distinct smell, usually similar to rotten eggs. This is crucial for safety, as it helps to prevent accidents and ensure that any leaks can be identified quickly.

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