Question

1. ______ reduce the frictions *
1 point
Lubricants
Drag
Mass
None of these
2. Friction produces *
1 point
Light
Sound
Heat
None of these
3. The friction exerted by fluid is called *
1 point
Static friction
Sliding friction
Rolling friction
Drag
4. ______ friction is self adjusting force *
1 point
Static
Sliding
Rolling
None of these
5. If we rub our hands, heat is generated by *
1 point
Static friction
Sliding friction
Drag
Rolling friction
6. _____ and ______ are called fluids *
1 point
Liquids, Gases
Solids, Liquids
Solids, Gases
Solids, Molten
7. Friction does not depends upon *
1 point
Nature of surface
Normal force
Area of contact
Nature of surface and normal force
8. A push or a pull is called *
1 point
Force
Friction
Acceleration
Velocity
9. Which of the following is correct *
1 point
Friction is good
Friction is evil
Both
None
10. The friction exerted by a rolling body is *
1 point
static friction
Sliding friction
Rolling friction
None of these
11. ______ is not a natural fibre *
1 point
Cotton
Silk
Wool
Nylon
12. _______ is not a synthetic fibre *
1 point
Polyster
Cotton
Nylon
Acrylic
13. Synthetic fibre's are made up of *
1 point
Polymers
Monomers
Both
None of these
14. The combination of two or more fibre's is called *
1 point
Blending
Bleeding
Moulding
Melting
15. Rayon is prepared by *
1 point
Coal
Oxygen
Fibre
Cellulose
16. The material which is not decompose by natural process is called *
1 point
Non-biodegradable
Biodegradable material
Polyester
Nylon
17. Terylene is mixed with ______ to make terricot *
1 point
Wool
Silk
Cotton
None of these
18. PET bottles belong to plastic material *
1 point
Code 1
Code 2
Code 3
Code 4
19. The correct order is *
1 point
Monomer → Fibre → Polymer
Polymer → Monomer → Fibre
Monomer → Polymer → Fibre
None of these
20. The first artificial silk fibre factory in india was established in *
1 point
Gurajat
Delhi
Kerala
Kolkata
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Answer 1

1. Lubricant
2.heat
3. Static friction
6.liquid and gases
8.force
9. Both
10. Rolling friction
11. Nylon
12. Cotton
16. Non-biodegradable

Answer 2

Answer:

• 1. lubricants
• 2.heat
• 3.drag
• 4.static
• 5.sliding friction
• 6.liquids gases
• 7.normal force
• 8.force
• 9.both
• 10.rolling friction
• 11.nylon
• 12.cotton
• 13.both
• 14.blending
• 15.cellulose.
• 16.non biodegradable
• 17.cotton
• 19.monomer-polymer-fibre
• 1