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- 1. Multiple Choice
Name the plastic used for making water pipes
Polythene
PVC
Acrylic
Bakelite
- 2. Multiple Choice
Select 2 polyester fibres
Polythene
PET
Terylene
Melamine
- 3. Fill in the Blank
Name the plastic used for non - stick coating
- 4. Fill in the Blank
Many small unit combine together to form a large unit called _________
- 5. Multiple Choice
Cooking pans have plastic handles because
They are light, durable and strong
They are non- reactive
They are poor conductors of heat and electricity
They do not catch fire
- 6. Multiple Choice
Poly + Cot = ______
Polycotton
Polcot
Polycot
Terrycot
- 7. Multiple Choice
Silk fibre is obtained from silk worm whereas artificial silk is obtained by the chemical treatment of _______________.
paper pulp
Rayon
Coal, air and water
wood pulp
- 8. Multiple Choice
Polythene which is used to make polythene bags is an example of a ________.
Thermoplastics
thermosetting plastics
- 9. Multiple Choice
Iron rusts when it is exposed to ______________ and _____________.
Air, Water
Air, Fire
Oxygen, Fire
Fire, Water
- 10. Multiple Choice
Special cookwares are used in microwave ovens for cooking because
They have non - stick coating
The heat cooks the food but does not affect the plastic vessel
They are fire resistant
- 11. Fill in the Blank
Synthetic fibre popular for its strength
- 12. Fill in the Blank
The plastics which gets deformed easily on heating and can be bent easily is called ________
- 13. Multiple Choice
Plastics which resists fire and can tolerate heat better than other plastics
Bakelite
Melamine
Polythene
PVC
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