Tag: polymers

Quizzes (12) Questions (105)

Questions Related to polymers

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which one of the following is an example of co-polymer ?

  1. Buna - S

  2. Teflon

  3. PVC

  4. Polypropylrnr
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Copolymer is a polymer made of two or more than two different monomers.

Buna-S is made of $1,3-$butadiene and styrene monomer.
But others are made of single polymer only.
Teflon $\longrightarrow$ Tetrafluorocarbon.
PVC $\longrightarrow$ Vinyl Chloride.
Polypropylene $\longrightarrow$ Propylene.

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which of the following is not addition copolymer?

  1. Saran

  2. Vinyon

  3. SBR

  4. PVC
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PVC (Polyvinyl chloride) is formed by the addition polymerization of a single monomer, vinyl chloride, making it a homopolymer rather than a copolymer. Saran, Vinyon, and SBR are copolymers formed from two or more different monomers.

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which one is not a synthetic rubber?

  1. Buna -S

  2. Homopolymers of 1, 3-butadiene derivative

  3. PVC

  4. Copolymer of 1, 3-butadiene
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

PVC is a thermoplastic polymer made from vinyl chloride monomer and is a plastic, not a synthetic rubber. Buna-S and copolymers/homopolymers of butadiene derivatives are classified as synthetic rubbers (elastomers).

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Caprolactam is the monomeric unit of :

  1. Nylon 6, 6

  2. Nylon 2-Nylon 6

  3. Nylon 6

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Nylon 6 is made from one kind of monomer called caprolactam. 

Nylon 6,6 is made from two monomers, adipoyl chloride and hexamethylene diamine.

Nylon 2–Nylon 6 is a copolymer of glycine and amino caproic acid. 
Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which of the following represents the example of a homopolymer ?

  1. PMMA

  2. Bakelite
  3. Nylon - $6,\:6$

  4. Neoprene
Reveal answer Fill a bubble to check yourself
A,D Correct answer
Explanation

When a polymer is made by linking only one type of small molecule or monomer together, it is called a homopolymer, e.g. PMMA and Neoprene.


When two different types of monomers are joined in the same polymer chain, the polymer is called a co-polymer, e.g., Nylon - $6,:6$ and Bakelite.

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which of the following is a co-polymer ?

  1. Polytetrafluoroethylene

  2. Polyvinyl chloride

  3. Polyethylene
  4. Nylon - $6, \:6$

  5. Natural rubber
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A polymer derived from more than one species of monomer is a co-polymer e.g. Nylon - $6,:6$. 


All others are formed by following single monomers: 
Polytetrafluoroethylene - tetrafluoroethylene, 
Polyvinyl chloride - vinyl chloride, 
Polyethylene - ethylene and
 Natural rubber or polyisoprene - isoprene ($2$-methyl-$1,:3$-butadiene).

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Match column 1 with column 2


List I List II
1 PET a garden hoses, shoe soles
2 High-density polyethylene b soft drink bottles, detergent bottles
3 Poly vinyl chloride c squeeze bottles, dry cleaning bags
4 Low-density polyethylene d milk bottles, shopping bags

  1. 1-d, 2-a, 3-b, 4-c

  2. 1-b, 2-d, 3-a, 4-c

  3. 1-c, 2-a, 3-b, 4-d

  4. 1-b, 2-c, 3-a, 4-b
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

PET is a clear, tough polymer with exceptional gas and moisture barrier properties. PET's ability to contain carbon dioxide (carbonation) makes it ideal for use in soft drink bottles. 


HDPE is used in milk, juice and water containers in order to take advantage of its excellent protective barrier properties. 


PVC provides excellent clarity, puncture resistance and cling.

 LDPE offers clarity and flexibility. It is used to make bottles that require flexibility.


1-b, 2-d, 3-a, 4-c

Multiple choice copolymerisation types of polymerisation reactions polymer polymers chemistry

Which of the following is an alternative copolymer?

  1. Styrene

  2. Neoprene
  3. Nylon - $2$ - nylon - $6$
  4. Nylon - $6$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Alternative polymers are those polymers which are formed by only two monomeric units which are alternatively arranged in polymeric chain Nylon - $2$ - nylon - $6$.
The formation is shown in the reaction below:
$HOOC-(CH _2) _4-COOH + H _2N-(CH _2) _2-NH _2 \rightarrow -[NH(CH _2) _2NHCO(CH _2) _4CO] _n- + nH _2O$