Polymers Test

Result

Polymers Test - 11

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is/are semi-synthetic polymer(s)?

A
Cellulose acetate

B
Viscose rayon

C
Cellulose nitrate

D
All of the above

Solution

Cellulose acetate (rayon) and cellulose nitrate, etc. are cellulose derivatives and are prepared by the chemical treatment of plant cellulose which is a natural substance. Hence, these are examples of semi-synthetic polymers as they are prepared by the chemical treatment of a natural raw material.
Question 2
1 / -0

Arrange the following given polymers in the decreasing order of their intermolecular forces:

X = Nylon-6,6
Y = Buna-S
Z = Polythene

A
X > Y > Z

B
Y > Z > X

C
Z > X > Y

D
X > Z > Y

Solution

Polyamides (Nylon-6,6) have polar bond and the fibres are held together by stronger intermolecular forces of attraction, i.e. dipole-dipole interactions.
Between polythene and Buna-S, Buna-S has a larger surface area. So, it will be more stable.

Hence, the decreasing order of the intermolecular forces is X > Y > Z.
Question 3
1 / -0

The following question has four choices, out of which ONLY ONE is correct.

Which of the following statements is not true about polyvinyl chloride?

A
It is a thermoplastic polymer.

B
It is the third most widely produced plastic.

C
It can be made softer and more flexible by the addition of plasticisers.

D
It is never used in clothing.

Solution

PVC has become widely used in clothing either to create a leather-like material or at times simply for the effect of PVC. PVC clothing is common in Goth, Punk and alternative fashions. PVC is cheaper than rubber, leather, and latex and so it is more widely available and worn.

PVC fabric has a sheen to it and is waterproof. It is commonly used in coats, skiing equipment, shoes, jackets, aprons, and bags.
Thus, (4) is a false statement and the correct option.
Question 4
1 / -0

Which of the following polymers is obtained by copolymerisation of three monomers?

A
SAN

B
ABS

C
SBR

D
PTFE

Solution

Acrylonitrile butadiene styrene (ABS) is a common thermoplastic polymer. ABS is a terpolymer made by polymerising styrene and acrylonitrile in the presence of polybutadiene.