Teflon

Q.

Does phenol react with plastic?

Q. Metal sheet of a car is coated with a certain substance A to protect the damage due to rain and temperature. Identify the substance A and one of its characteristic property P.

1. A: Sodium
   P: Hard
2. A: Teflon
   P: Non-stick
3. A: Ceramics
   B: Water resistant
4. A: Porcelain
   P: Transparent

Q. Why has the use of methods like Teflon coating become more common?​

Q. Choose the characteristics of teflon from the options given below.

1. Non-stick in nature
2. Heat resistance
3. Abrasion resistance
4. Good conductor of heat

Q. _______ nanoparticles are widely used in sunscreens and cosmetics, stain resistant fabrics and dirt repellent paints.

1. The metal oxide
2. Gold
3. Silver
4. The metal sulphide

Q. The chemical name of teflon is ______.

1. polytetrafluoroethene
2. polytetrafluoroprene
3. polyethylene terephthalate
4. polytetrafluoroethane

Q. Teflons are used in non-stick cookwares.

1. False
2. True

Q. Teflon has anti-adhesive property.

1. False
2. True

Q. Non-stick utensils are coated with _____.

1. teflon
2. plastics
3. melamine
4. rubber

Q.

Question 33
Electrical wires have a coating of an insulating material. The material, generally used is
(a) Sulphur
(b) Graphite
(c) PVC
(d) All can be used

Q. Teflon coatings are resistant to corrosion.

1. True
2. False

Q. Burst the bubbles showing the properties of teflon.

1. Non-stick
2. Sticky
3. Heat resistant
4. Non-wetting
5. Durable
6. Tough
7. Wetting
8. Good conductor

Q. Compound A is a polymer of compound B and has the following characteristics.
a. It is non-sticky in nature.
b. It is heat resistant.
c. It is a bad conductor of electricity.
Based on the given characteristics identify the correct option depicting both A and B.

1. A: Teflon,
   B:Ethene
2. A: Teflon,
   B:Tetrafluroethelyne
3. A: Polythene,
   B:Tetrafluroethelyne
4. A: Polypropene,
   B: Propenene