Question

4. Cell walls is found in
(a) piant ceiis only (b) animais ceiis only (c) both (a) and (b) (d)none of them
5. Friction always
(a) opposes the motion (b) helps in motion (c) both (a) and (b) (d) none of these
6. Pure or distilled water is a
(a) poor conductor (b) good conductor (c) both (a) and (b) (d) none of these
7. Which of the following cannot be charged easily by friction?
(a) a plastic scale (b) a copper rod
(c) an inflated balloon(d) a woollen cloth
8. Which of the following is a natural fibre
(a) wool
(b) nylon
(c) PVC
(d) polythene
9. Which of the following gas is necessary for combustion?
(a) Hydrogen
(b) oxygen
(c) nitrogen
(d) carbon dioxide
10. Out of these, which gas is able to control fire?
(a) NH3
(b) CO2
(c) O₂
(d) CO​

Answer 1

Answer:

4.a

5.a

6.a

7.c

8.a

9.b

10.b

Answer 2

Answer:

4.Plant cell only

5.Helps on motion

6.poor conductor

7.a plastic scale

8.wool

9.Oxygen

10.Co2

Hope it will help you..