Science, asked by manishsr453, 7 months ago


1. Objective type questions
A. Choose the correct option.
1. Which of the following is not a synthetic fibre?
a. Spandex b. Cotton
C. Nylon
2. A synthetic fibre used for making fishing nets and strings of badminton and
tennis racquet
a. Rayon
b. Spandex c. Acrylic
3. Which of the following is a characteristic of a synthetic fibre?
a. Good conductor of electricity b. Wrinkle resistant
c. High moisture absorbing capacity
d. Poor elasticity
4. Which of the following is a property of a plastic?
a. Poor conductor of electricity b. Does not corrodes or rusts
c. Insoluble in water
d. All of these
5. A plastic used as automobile battery casings:
a. PP
b. LDPE
C. PS
d. PVC
6. Which of the following cannot be remoulded after heating?
a. Polyvinyl chloride
b. Polypropylene
C. Melamine
d. Polystyrene
7. Which of the following fibres are used for making conveyor belts?
a. Rayon
b. Terylene C. Cotton
d. Acrylic
8. Which of the following fabrics is waterproof?
a. Nylon
b. Rayon
C. Spandex d. Wool
9. Polypropylene is used for making
a. ketchup bottles
b. yogurt containers
c medicine bottles
d. All of these
10. Which of the following are harmful effects associated with plastic disposal?
a. Reproductive failure in fish and other aquatic organisms
b. Burning of plastics produce toxic gases and smoke
c. Plastics that get buried prevent rainwater from seeping into the ground
d. All of them
pls answer​

Answers

Answered by jasmine4085
0

Answer:

sorry its so long and lendi

Answered by Anonymous
5
  1. cotton
  2. spandex
  3. wrinkle resistant
  4. insoluble in water
  5. pvc
  6. acrylic

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