Question

The IUPAC name for Teflon is-
A.Polytetrafluoroethylene
B.Polytetrafluoroethylene
C.Polytetrafluoroethylene
D.Polytetrafluoroethylene

Answer 1

Hint:Teflon is a synthetic polymer. Polymers are high molecular mass substances where every molecule is derived from a large number of simple molecules joined together. They are formed from repeated combination of simplest units known as monomers and the process of formation of polymers is called polymerization

Step-by-Step Solution
Teflon is an additional polymer. It is prepared by polymerization of monomer tetrafluoroethylene which has a carbon-carbon double bond. Tetrafluoroethylene has four fluorine atoms in which two fluorines are attached to carbon atoms. The reaction is as follows-
$n{\text{ }}\mathop {{\text{C}}{{\text{F}}_2} = {\text{C}}{{\text{F}}_2}}\limits_{{\text{Tetrafluoroethylene}}} \xrightarrow{{{\text{Polymerisation}}}}\mathop {{{\left[ { - {\text{C}}{{\text{F}}_2} - {\text{C}}{{\text{F}}_2} - } \right]}_n}}\limits_{{\text{Teflon}}} $
In this reaction, n molecules of tetrafluoroethylene are polymerized to form Teflon.
 It is also known as PTFE because its IUPAC name is Poly Tetrafluoroethylene. We joined poly before the name of polymer because poly means many and there are ‘n’ numbers of tetrafluoroethylene molecules attached to each other in this polymer.
This PTFE formed is a fluorocarbon solid in which C-F bond is strong due to great electro-negativity difference between the carbon and fluorine atoms. Due to this it does not react with other compounds.
Its properties are-
1.It has a high melting point.
2.It is highly inert as it does not react with other substances.
3.Teflon is heat resistant material.
Answer-Hence correct answer is- D.

Note:Teflon is also used as following-
1.To coat dental fillings
2.In curling irons and hair irons as a coating.
3.As a coating on prescription and recreational glasses due to its waterproof quality.
4.In windscreen wipers for cars.
5.Teflon is used for non-stick coating for cooking utensils like cooking pans because It provides a non-stick and frictionless surface for the cookware.