Question

Boojho's science teacher burnt a cotton fibre in the laboratory and instructed students of observe carefully write two important observations made by the students

Answer 1

As cotton is a natural fibre...it will burn very quickly. It is made up of about 90% cellulose, which when burnt gives an odour of burning leaves...

It will burn in light coloured(whitish-yellow) flame and will catch fire in no time.

Hope this helps you.