PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
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 is from a pure silk saree? Give a reason for your answer.
 
To determine the , you have to burn a thread of silk. If the burning smell of that thread is similar to the burning smell of , then the thread will be pure silk. Silk and hairs are fibres; thus, they generate the same smell.

To determine the , you have to burn a thread of cotton. If that thread's burning smell is similar to the burning smell of , then the thread will be pure cotton. Cotton and paper are ; thus, they generate the same smell.