Thermoplastics

Q. <!--td {border: 1px solid #cccccc;}br {mso-data-placement:same-cell;}--> Why is plastic kitchenware preferred over metal kitchenware? [3 Mark]

Q.

Which of the following plastics do not have cross-links between their polymer chains?
A. Nylon
B. Melamine
C. Polyvinyl Chloride
D. Bakelite

1. A and B

2. B and C

3. A and C

4. C and D

Q.

Which of the following is a monomer of polythene?

1. Isoprene

2. Ethene

3. Propene

4. Styrene

Q. The plastics that can be remoulded on heating are called _______ and those which cannot be remoulded are called _______.

1. thermoplastics, thermosets
2. thermosets, thermoplastics
3. melamine, polystyrene
4. melamine, thermoplastics

Q. Non-stick utensils are coated with _____.

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

Q. Plastics that can be melted on heating and remoulded easily are known as .

1. thermoplastics
2. thermosets
3. bakelite

Q. Which amongst the following can be remoulded by heating it?

1. PVC
2. Nylon
3. Melamine
4. Rayon

Q. Plastics that can be melted on heating and remoulded easily are known as .

1. thermoplastics
2. thermosets
3. bakelite

Q. Identify the example of thermoplastics.

1. Polyethylene
2. Bakelite
3. Polyvinyl chloride
4. Melamine

Q. Which of the following plastic is used to make the pipes used in water supply? Also, identify the type of plastic.

1. Plastic:- Polystyrene
   Type of plastic:- Thermoplastic
2. Plastic:- Polyvinyl chloride
   Type of plastic:-Thermoplastic
3. Plastic:- Melamine
   Type of plastic:-Thermosetting
4. Plastic:- Bakelite
   Type of plastic:- Thermosetting