Polymers Test

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Polymers Test - 65

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Weekly Quiz Competition

Question 1
1 / -0

Consider the following repeat unit structure:

A
Poly(amide-imide)

B
Polyacrylonitrile

C
Polybutadiene

D
Polyethylene
Question 2
1 / -0

Natural fibre is :-

A
Bakelite

B
Cellulose

C
Rubber

D
Nylon-$$6$$

Solution
Question 3
1 / -0

The cork cambium, cork and secondary cortex are collectively called?

A
Phelloderm

B
Phellogen

C
Periderm

D
Phellem
Solution
Correct Option: C
Explanation:
- In extrastelar secondary growth, epidermis and pericycle with parenchyma or collenchyma cells acquire secondary meristematic property by de-differentiation and is called cork cambium.
- It is a lateral meristem that helps in secondary growth. It produces tough protective material called cork.
- The phelloderm is present inside the cork cambium.
- The phelloderm (secondary cortex), phellogen (cork cambium) and phellem (cork) are the primary covering layer when the epidermis gets ruptured. This periderm is a protective layer of the dicot stem.
Question 4
1 / -0

Match the following
polymer Catalyst
A) Low density polythene 1) $${\text{FeS}}{{\text{O}}_{\text{4}}}{\text{ + }}{{\text{H}}_{\text{2}}}{{\text{O}}_{\text{2}}}$$
B) Polypropylene 2)$${\left( {{\text{N}}{{\text{H}}_{\text{4}}}} \right)_{\text{2}}}{{\text{S}}_{\text{2}}}{{\text{O}}_{\text{8}}}$$
C) Teflon 3) $${\left( {{{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}} \right)_{\text{3}}}{\text{Al}}$$
D) Orlon 4)Trace of oxygen

A
A-4 , B-3, C-2, D-1

B
A-4, B-3, C-1, D-2

C
A-3, B-4, C-2, D-1

D
A-3, B-4, C-1, D-2
Question 5
1 / -0

Which of the following polymers consists of practically linear molecules?

A
Low density polythene

B
High density polythene

C
Both (A) and (B)

D
Neither (A) nor (B)
Question 6
1 / -0

Which one of the following polymer is step-growth polymer?

A
Polyethylene

B
Nylon-$$6,6$$

C
Buna-$$S$$ rubber

D
Orlon

Solution
Question 7
1 / -0

Which of the following is not correctly matched?

A

B

C

D

Solution
Question 8
1 / -0

Synthetic rubber is:

A
Polyisoprene

B
Polychloroprene

C
Polyethene

D
Polyesters
Question 9
1 / -0

Acetoacetic ester is made by the process of:

A
esterification

B
condensation

C
polymerisation

D
isomerisation

Solution

Acetoacetic ester condensation is a self‐condensation of ester in the presence of alkali alkoxide in alcohol to form β‐keto esters. It is carried out under basic conditions to generate β‐keto‐esters. This reaction is found to be very useful for the synthesis of a series of β‐keto esters (both branched and unbranched)
Hence option (B) is correct.
Question 10
1 / -0

Major product of the following reaction is :

A

B

C

D