​Choose the correct statements from the following:
(A) PET (Polyethylene Terephthalate) is a very familiar form of Nylon
(B) Esters are the chemicals which give fruits their smell
(C) Synthetic fibres do not melt on heating
(D) All the synthetic fibres are prepared by a number of processes using raw material of petroleum origin, called petrochemicals​

Correct option is D

The correct answer is Only B and D.

• PET (Polyethylene Terephthalate) is a very familiar form of Nylon. This statement is incorrect.
  ○ PET is not a form of Nylon; it is a distinct type of synthetic polymer used mainly for packaging and fabricating containers.
• Esters are the chemicals which give fruits their smell. This statement is correct.
  ○ Esters are responsible for the characteristic fragrances and flavors in many fruits. They are naturally occurring compounds.
• Synthetic fibres do not melt on heating. This statement is incorrect.
  ○ Most synthetic fibres can melt upon heating since they are thermoplastic in nature.
• All the synthetic fibres are prepared by a number of processes using raw materials of petroleum origin, called petrochemicals. This statement is correct.
  ○ Synthetic fibres such as polyester, nylon, and acrylic are indeed created using petrochemicals derived from petroleum.

Additional Information

• Synthetic Fibres and Heat
  ○ Unlike natural fibres, synthetic fibres tend to melt or burn when exposed to high temperatures rather than charring.
• Use of Petrochemicals
  ○ Petrochemicals are essential feedstocks used to manufacture a wide range of synthetic materials, including plastic and synthetic fibres.