Polythene
Sponge
Sulphur
Chlorine
Answer is Right!
Answer is Wrong!
The correct answer is C. Sulphur.
Sulphur is added to natural rubber to make it strong and more bouncy. This process is called vulcanization. When sulphur is added to rubber, it forms cross-links between the long chains of rubber molecules. This makes the rubber stronger and more elastic.
Polythene is a type of plastic. It is not added to natural rubber to make it strong and more bouncy.
Sponge is a type of material that is made from a network of small holes. It is not added to natural rubber to make it strong and more bouncy.
Chlorine is a type of element. It is not added to natural rubber to make it strong and more bouncy.