Question

Which of the following groups contain all synthetic substances?

• A. Nylon, Terylene, Wool
• B. Cotton, Polycot, Rayon
• C. PVC, Polythene, Bakelite
• D. Acrylic, Silk, Wool

Answer 1

The correct option is C

PVC, Polythene, Bakelite

The explanation for correct option:

Option (C) PVC, Polythene, Bakelite

Synthetic substances

• The substances which are synthesized artificially are known as synthetic substances.
• These substances are not found in nature naturally, they are man-made.

Natural substances

• The substances which are found in nature are known as natural substances.
• These substances are not man-made, they are produced by nature.

PVC, Polythene, Bakelite

• PVC is Polyvinyl Chloride, it is a polymer that is made from vinyl chloride by polymerization. It is a synthetic substance.
• Polythene is a synthetic substance made from the polymerization of ethylene.
• Bakelite is a thermosetting plastic formed by the polymerization of phenol and formaldehyde. It is a synthetic substance.
• All three substances are synthetic.
• Hence, this option is correct.

The explanation for incorrect options:

Option A: Nylon, Terylene, Wool

• Nylon is a synthetic polymer composed of polyamide. It is a silk-like thermoplastic, generally made from petroleum, that can be melt-processed into fibers, films, or shapes. It is a synthetic substance.
• Terylene is an artificial textile fiber made from polyester. It is a synthetic substance.
• Wool is the textile fiber obtained from sheep and other animals. It is a natural fiber.
• As one of the substances is not synthetic, this option is incorrect.

Option B: Cotton, Polycot, Rayon

• Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants. It is a natural substance.
• Polycot is obtained by mixing polyester and cotton. Hence it is a semisynthetic substance.
• Rayon is a semi-synthetic fiber, made from natural sources of regenerated cellulose, such as wood and related agricultural products.
• As all substances are not synthetic, this option is incorrect.

Option D: Acrylic, Silk, Wool

• Acrylic is a transparent thermoplastic homopolymer. It is a synthetic substance,
• Silk is a natural protein fiber, some forms of which can be woven into textiles. It is a natural substance.
• Wool is the textile fiber obtained from sheep and other animals. It is a natural substance.
• As two of the substances are not synthetic, this option is incorrect.

Hence, option C, PVC, Polythene, Bakelite, is the correct answer.