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Chemistry Polymers

Assertion : Olefinic monomers undergo addition polymerisation.

Reason : Polymerisation of vinylchloride is initiated by peroxides/ persulphates.

 

(i) Assertion and reason both are correct statement but reason does not explain assertion.

(ii) Assertion and reason both are correct statements and reason explains the assertion.

(iii) Both assertion and reason are wrong statement.

(iv) Assertion is correct statement and reason is wrong statement. (v) Assertion is wrong statement and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(i) Assertion and reason both are correct statement but reason does not explain assertion.

Explanation: Olefinic monomers undergo addition polymerisation. The molecules of the same monomer or different monomer are added together to form this type of polymer. This mode of polymerisation leads to an increase in chain length.

New answer posted

a year ago

Chemistry Polymers

Assertion : Most of the Synthetic polymers are not biodegradable.

Reason : Polymerisation process induces toxic character in organic molecules.

 

(i) Assertion and reason both are correct statement but reason does not explain assertion.

(ii) Assertion and reason both are correct statements and reason explains the assertion.

(iii) Both assertion and reason are wrong statement.

(iv) Assertion is correct statement and reason is wrong statement. (v) Assertion is wrong statement and reason is correct statement.
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(iv) Assertion is correct statement and reason is wrong statement. (v) Assertion is wrong statement and reason is correct statement.

Explanation:  Most of the Synthetic polymers are not biodegradable. A large number of the polymers are resistant to the degradation process of the environment and therefore, are responsible for the accumlation of polymeric solid waste material.

New answer posted

a year ago

Chemistry Polymers

Note : In the following questions a statement of assertion followed by a statement of reason is given.

Choose the correct answer out of the following choices.

 

Assertion : Rayon is a semi synthetic polymer and is taken as a better choice than cotton fabric. 

Reason : Mechanical and aesthetic properties of cellulose can be improved by acetylation.

(i) Assertion and reason both are correct statement but reason does not explain assertion.

(ii) Assertion and reason both are correct statements and reason explains the assertion.

(iii) Both assertion and reason are wrong statement.

(iv) Assertion is correct statement and reason is

...more
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Payal Gupta

Contributor-Level 10

This is a assertion and reason answer type question as classified in NCERT Exemplar

(ii) Assertion and reason both are correct statements and reason explains the assertion.

Explanation:  Rayon is a semi synthetic polymer. It is preferred over cotton fabric because its properties are improved by acetylation.

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with their repeating units given in Column II.

 
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Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (d) (ii) → (a) (iii) → (b) (iv) → (e) (v) → (c)

New answer posted

a year ago

Chemistry Polymers

Match materials given in Column I with the polymers given in Column II.

Column I

Column II

i. Natural rubber latex

a. Nylon

ii. Wood laminates

b. Neoprene

iii. Ropes and fibers

c. Dacron

iv. Polyester fabric

d. Melamine-formaldehyde resins

v. Synthetic rubber

e. Urea-formaldehyde resins

vi. Unbreakable crockery

f. cis-polyisoprene 
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P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (f) (ii) → (e) (iii) → (a) (iv) → (c) (v) → (b) (vi) → (d)

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with the type of linkage present in them given in Column II.

Column I

Column II

i. Terylene

a. Glycosidic linkage

ii. Nylon

b. Ester linkage

iii. Cellulose

c. Phosphodiester linkage

iv. Protein

d. Amide linkage

v. RNA

  
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P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (b) (ii) → (d) (iii) → (a) (iv) → (d) (v) → (c)

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with the preferred mode of polymerisation followed by their monomers.

Column I

Column II

i. Nylon-6,6

a. Free radical polymerisation 

ii. PVC

b. Ziegler-Natta polymerisation or coordination polymerisation

iii. HDP

c. Anionic polymerisation
 

d. Condensation polymerisation
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P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (d) (ii) → (a) (iii) → (b)

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with their main applications given in Column II

Column I

Column II

i. Bakelite

a. Unbreakable crockery

ii. LDP

b. Non-stick cookwares

iii. Melamine-formaldehyde resin

c. Packaging material for shock absorbance

iv. Nylon-6

d. Electrical switches

v. Poly tetrafluoro ethane

e. Squeeze bottles

vi. Polystyrene

f. Tyre, cords
0 Follower 4 Views

P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (d) (ii) → (e) (iii) → (a) (iv) → (f) (v) → (b) (vi) → (c)

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with their commercial names given in Column II.

Column I

Column II

i. Polyester of glycol and phthalic acid

a. Novolac

ii. Copolymer of 1,3-butadiene and styrene

b. Glyptal

iii. Phenol and formaldehyde resin

c. Buna-S

iv. Polyester of glycol and terephthalic acid

d. Buna-N

v. Copolymer of 1,3-butadiene and acrylonitrile

e. Dacron
0 Follower 2 Views

P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (b) (ii) → (c) (iii) → (a) (iv) → (e) (v) → (d)

New answer posted

a year ago

Chemistry Polymers

Match the polymers given in Column I with their chemical names given in Column II.

Column I

Column II

i. Nylon-6

a. Polyvinyl chloride

ii. PVC

b. Polyacrylonitrile

iii. Acrilan

c. Polycaprolactum

iv. Natural Rubber

d. Low density polythene

v. LDP

e. cis-polyisoprene
0 Follower 6 Views

P
Payal Gupta

Contributor-Level 10

This is a matching answer type question as classified in NCERT Exemplar

(i) → (c) (ii) → (a) (iii) → (b) (iv) → (e) (v) → (d)

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