Question

14. Friction is independent of
A) Roughness
B) Area of contact
C) Weight of the objects
D) All the above
15. From the graph what does AB and BC represent?
A) AB represents the body is at rest. BC respresents
the body is moving with uniform velocity.
B) AB represents the body is moving with uniform
velocitv. BC represents the body is at rest.
C) AB and BC are same
D) AB represents the body is accelerating. BC
represents the body is at rest.
16. Which of the following is natural fibre obtained from plants.
A) Cotton B) Rayon C) Wool D) Nylon
17. Polymers are made up of small units called
A) Layers
B) Petrochemicals C) Molecules D) Monomers
18. The stongest synthetic fibre is
A) Rayon
B) Polyester C) Nylon D) Acrylic
19. is the other name of artificial silk
A) Nylon
B) Acrylic C) Polyester D) Rayon
20. Acrylic is also called as
A) Fare far B) Fur C) Wool D) Silk
21. Rayon is mixed with cotton to make
A)Bed sheets B) Carpets C)Ropes D) Sanitory products
22 plastics become softend on heating
A) Themoplastics B) Thermosetting C) A&B D) None
23. The symbol
Jrepresen
resents
A) PET
B) HDPE C) LDPE D) Others
24. Which of the following is identified by hot pin test?
A) Bakelite B) Malaminc C) Terylene D) Acrylin
25. Sodium is stored in
A) Kerosene B) Water C) None D) Acides
26. Metals generally react with acids and produce the gas.
A) O2
B) N2
C)H,
D) None
27. The hemoglobin of blood contains the metal
A) Calcium B) Magnesium C) Iron D) None
28. Maximum metals are obtained in
A) Liquid B) Solid C) Gaseous D) Plasma
29. Generally non-metallic oxides are in nature.
A) Basie
B) Acidic C) Neutal D) Dual nature
30. The property of changing the metals in to sheets is
A) Malleability B)Ductility C) Conductivity D) Electric conductivity
statc
CHOOSE ANSWER FOR QUESTION 30​

Answer 1

d

5c

6b

7a

8a

9d

10 a

11d

12c

13v

Answer:

1 a

2c

3b

4