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Synthetic Fibres and Plastics Science - Synthetic Fibres and Plastics

Bihar Board (BSEB) - STD 8 - Science (BSEB - English Medium). 82 questions in this chapter.

Question types

Synthetic Fibres and Plastics question types

82 questions across 6 question groups — pick any mix to generate a Science paper with step-by-step answer keys.

82
Questions
6
Question groups
5
Question types
Sample Questions

Synthetic Fibres and Plastics questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 1M.C.Q. [I MARKS]1 Mark
Which of the following plastics do not have cross-links between their polymer chains?
$A.$ Nylon.
$B.$ Melamine.
$C.$ Terylene.
$D.$ Bakelite.
  • A
    $A$ and $B$
  • B
    $B$ and $C$
  • ✓
    $A$ and $C$
  • D
    $C$ and $D$

Answer: C.

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Q 2M.C.Q. [I MARKS]1 Mark
Which of the following plastic objects can be recycled?
$A.$ Electric socket.
$B.$ Polythene bag.
$C. \ce{PVC}$ pipe.
$D.$ Ashtray.
  • A
    $A$ and $B$
  • ✓
    $B$ and $C$
  • C
    $A$ and $D$
  • D
    $C$ and $D$

Answer: B.

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Q 5M.C.Q. [I MARKS]1 Mark
The similarity between artificial silk and cotton is that:
  • A
    Both are non$-$biodegradable.
  • B
    Both melt on heating.
  • C
    Both are amide polymers.
  • ✓
    Both are cellulose polymers.

Answer: D.

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Q 6as requested in detail. [5 marks ]5 Marks
Which plastic is used:
$a.$ For making uniforms of fire$-$men fire resistant?
$b.$ For giving non$-$stick coating on frying pans?
$c.$ For making handles of frying pans?
$d.$ For making insulation $($covering$)$ of electric wires?
$e.$ For making electric switches?
$f.$ For making flexible water bottles?
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Q 17questions in details [4 marks ]4 Marks
Match the terms of column $A$ correctly with the phrases given in column $B$:
S. No.
A
S. No.
B
$(i)$
Polyester
$(a)$
Prepared by using wood pulp.
$(ii)$
Teflon
$(b)$
Used for making parachutes.
$(iii)$
Rayon
$(c)$
Used to make non-stick cookware.
$(iv)$
Nylon
$(d)$
Fabrics do not wrinkle easily.
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Q 18questions in details [4 marks ]4 Marks
Out of the following materials:
Cotton, Nylon, Terylene, Wool, $\text{PET}$, Acrylic.
$a.$ Which materials are polyesters?
$b.$ Which material is a polyamide?
$c.$ Which material is used as a substitute for wool?
$d.$ Which material is used as a substitue for glass?
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Q 19questions in details [4 marks ]4 Marks
The synthetic fibre $A$ is chemically a polyamide whereas the synthetic fibre $B$ contains a large number of ester groups. Another synthetic fibre $C$ is made of a polymer $D$ which consists of a number of glucose units joined one after the other.
$a.$ Which fibre could be $(i)$ terylene $(ii)$ rayon, and $(iii)$ nylon?
$b.$ Name the polymer $D$.
$c.$ Which fibre $(A, B$ or $C)$ is prepared from a natural raw material?
$d.$ Which fibre $(A, B$ or $C)$ contains the same type of groups as those in a $\text{PET}$ jar?
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Q 20questions in details [4 marks ]4 Marks
Which of the following articles made of plastics ‘can be recycled’ and which ‘cannot be recycled’? Give
reasons for your choice.
Telephone instruments, Plastic toys, Cooker handles, Plastic covering on electrical wires, Electric switches,
Ballpoint pens, Carry bags, Plastic bottles, Plastic chairs.
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