Paheli went to the market to buy sarees for her mother. She took out a thread from the edge of the two sarees shown by the shopkeeper and burnt them. One thread burnt with a smell of burning hair and the other burnt with the smell of burning paper. Which thread is from a pure cotton saree and which one from a pure silk saree? Give reason for your answer.

Explanation

To determine which thread is from a pure cotton saree and which is from a pure silk saree, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Threads**: Paheli has two threads, one from each saree. We need to analyze the burning characteristics of each thread.

2. **Burn the Threads**: Paheli burns both threads to observe the smell produced during combustion.

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