Advertisements
Advertisements
प्रश्न
Which of the following groups contain all synthetic substances?
पर्याय
Nylon, Terylene, Wool
Cotton, Polycot, Rayon
PVC, Polythene, Bakelite
Acrylic, Silk, Wool
Advertisements
उत्तर
PVC, Polythene, Bakelite
Explanation:
PVC, polythene and bakelite are synthetic substances.
APPEARS IN
संबंधित प्रश्न
Fill in the blanks with appropriate words.
Synthetic fibres are synthesised from raw materials called ______
Rana wants to buy shirts for summer. Should he buy cotton shirts or shirts made from synthetic material? Advise Rana, giving your reason.
Match the terms of column A correctly with the phrases given in column B.
| A | B | ||
| 1 | Polyester | a | Prepared by using wood pulp |
| 2 | Teflon | b | Used for making parachutes and stockings |
| 3 | Rayon | c | Used to make non-stick cookware |
| 4 | Nylon | d | Fabrics do not wrinkle easily |
Give reason.
Why umbrellas are made up of synthetic clothes?
Crossword
Across
1. Fibre that is used as synthetic wool.
2. A plastic used for making water bottles.
3. A long chain made of small repeatingmonomers.
4. Another name for this semi-synthetic fibre is artificial silk.
Down
5. A type of fibre that is naturally obtained from a cocoon.
6. A synthetic fibre classified as polyester.
7. A polymer used for making rope.
Complete the Analogy:
______: Films:: Nylon: Fishing nets.
Choose the odd one:
The material similar to silk in appearance is ______.
Cotton is a natural polymer. What is its chemical name?
A synthetic fiber which looks like silk is obtained by chemical treatment of wood pulp. It is, therefore, known as artificial silk. What is its common name?
