Question

Superglue is a polymer of
A) Terephthalic acid chloride
B) Ethylene chloride
C) Acrylonitrile
D) Methyl$\alpha $- cyanoacrylate

Answer 1

Hint: The answer for this question includes the chapters of physical chemistry that deals with the concept of polymers where the superglue is formed by the reaction of water and the acrylic resin. This fact will lead you to the required answer.

Complete answer:
In the chapters of physical chemistry, we are familiar with the concepts of polymers, its preparation and also the properties and uses.
We shall see in detail about the polymers and which is one among them is called the superglue.
- Polymers are the repeating units having long chain compounds which are composed of small units called monomers.
- Polymers find a wide range of applications in their daily uses.
- Now, let us see each option in detail. In option A), the compound terephthalic acid chloride is the acid chloride of terephthalic acid and it is one of the monomers used for the preparation of polymer called Kevlar.
In option B) ethylene chloride which is basically called ethylene dichloride is the chemical used for the manufacture of a monomer called vinyl chloride used for the production of the polymer that is called as polyvinyl chloride.
Option C), that is acrylonitrile is the raw material which is mainly used for the manufacture of acrylic acid and modacrylic fibres.
Option D) that is Methyl$\alpha $- cyanoacrylate belongs to the family of cyanoacrylates which are strong and fast acting adhesives which have industrial, medical and also household uses.
This cyanoacrylate when reacted with water produces an intermediate ion that undergoes a polymerisation process to produce long chain compounds which are strong and which makes the compound very hard to tear apart.
Thus, this compound forms the superglue.

Therefore, the correct answer is option D) .

Note:
Note that superglue is the trade name used for the cyanoacrylate glue or in short ‘CA’ and is also known by the trade name Krazy glue. This fact may help you when a question is being asked as Krazy glue rather than superglue.