Plastic

Q.

'Avoid plastics as far as possible. Comment on this advice.

Q.

Question 3 (c)
Like synthetic fibres, plastic is also a _________.

Q.

What are the various types of plastics? Give two examples of each type of plastics.

Q. Should the handle and bristles of a toothbrush be made of the same material? Explain your answer.

Q.

Name any two uses of ‘‘single-use plastic’’ in daily life.

Q. Pickles are stored in plastic bottles mainly because they are:

1. good insulators
2. non-reactive
3. non-biodegradable
4. durable

Q. Write any 5 environmental hazards of plastics.

Q.

Question 5
Explain why plastic containers are favoured for storing food.

Q.

Which of the following is not a common property of plastics?

1. Non-reactive

2. Light in weight

3. Durable

4. Good conductor of electricity

Q.

State two uses of melamine.

Q.

Give reasons why plastic containers are used as storage devices?

Q. Write two properties and uses of melamine. [2 marks]

Q.

Which of the following plastics is used for making electric switches ?

(a) teflon (b) melamine (c) PET (d) bakelite

Q.

'avoid plastics as far as possible'. Comment on this advice.

Q.

What are plastics ? Name any five commonly used articles made of plastics.

Q.

Write some of the uses of plastics in healthcare industry.

Q. Plastic containers can be used to store pickles.

1. True
2. False

Q.

2. Write two things which are made from glass.

Q.

Write two uses of bakelite.

Q. Nylon is made from coal, water and air which are obtained from nature. Then why it is called Synthetic Fibre?

Q.

A synthetic fiber classified as a Polyester

Q.

What are the six Rs of sustainability?

Q.

If rayon is made from cellulose of wood pulp which is a natural substance then why is it known as a synthetic fibre?

Q.

Give two uses of PVC.

Q.

State whether the following statement is True or False:
Polythene is an example of synthetic fibre.

1. True

2. False

Q.

Name four different plastics

Q. Which is a thermosetting plastic? ​

1. Melamine​
2. Polythene​
3. PVC​
4. Nylon​

Q. Which of the following is not manufactured from high-density polythene?

1. Toys
2. Pipes
3. Containers
4. Candles

Q.

Synthetic fibre is polymer, while plastic is not a polymer. True/False

1. True

2. False

Q. Explain why plastic containers are favored for storing food.