choose the correct option :
1) which of the following is a characteristic of synthetic fibre ?
(a) good conductor of electricity
(b) wrinkle resistant
(c) high moisture absorbing capacity
(d) poor elasticity
2) which of the following is a property of plastic ?
(a) poor conductor of electricity
(b) does not corrode or rusts
(c) insoluble in water
(d) all of these
3) a plastic used as automobile battery casings:
(a) PP
(b) LDPE
(c) PS
(d) PVC
4) which of the following cannot be remoulded after heating ?
(a) polyvinyl chloride
(b) polypropylene
(c) melamine
(d) polystyrene
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Answer:
- d
- d
- a
- c
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Choose the correct option :-
1) Which of the following is a characteristic of synthetic fibre ?
(a) good conductor of electricity
✔(b) wrinkle resistant
(c) high moisture absorbing capacity
(d) poor elasticity
➡ Option.b) wrinkle resistant
2) Which of the following is a property of plastic ?
(a) poor conductor of electricity
(b) does not corrode or rusts
(c) insoluble in water
✔(d) all of these
➡ Option.d) all of these
3) A plastic used as automobile battery casings:
✔(a) PP
(b) LDPE
(c) PS
(d) PVC
➡ Option. a) PP
4) Which of the following cannot be remoulded after heating ?
(a) polyvinyl chloride
(b) polypropylene
✔(c) melamine
(d) polystyrene
➡ Option.c) melamine
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