Synthetic Fibres and Plastics Worksheet-4

Synthetic Fibres and Plastics Worksheet-4

1. Burning of plastic causes:

(a) Water pollution                      (b) Air pollution

(c) Sound pollution                      (d) All A, B, C

2. The rearing of silk worms for obtaining silk is called:

(a) Pisciculture                             (b) Sericulture

(c) Polyculture                              (d) Arboriculture

3. Which of the following statements is NOT true?

(a) Polymer occur in nature

(b) Cellulose is made up of glucose units

(c) Nylon is used to make parachute

(d) Cotton thread is stronger than nylon thread

4. Which part of the cotton plant yields cotton balls?

(a) Leaf              (b) Fruit             (c) Seed              (d) Flower

5. The two main processes of making fabrics are:

(a) ginning and weaving             (b) weaving and knitting

(c) weaving and spinning           (d) none of these

6. Plastics find extensive use in our daily lives because of:

(a) plastic is a polymer

(b) plastic has a linear arrangement of units

(c) it is easily mouldable

(d) it is synthetic

7. Which of the following is a property of plastic:

(a) flame resistant                        (b) Noncorrosive

(c) mouldable                                (d) all of these

8. The process of obtaining wool is:

(a) shearing, sorting, scouring and dyeing

(b) shearing, scouring, sorting and dyeing

(c) scouring, sorting, shearing and dyeing

(d) sorting, scouring, shearing and dyeing

9. Which of the following is made from coconut fibres?

(a) Sweaters      (b) Shoes           (c) Mattresses   (d) Sarees

10. The chief source of raw materials for all the synthetic fibre is:

(a) Petroleum   (b) Salts             (c) Vegetation   (d) Sea Water

Answer Key:

(1)-(b); (2)-(b); (3)-(d); (4)-(b); (5)-(c); (6)-(c); (7)-(d); (8)-(b); (9)-(c); (10)-(a)