Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 15 - Introduction to Polymer Chemistry [Latest edition]

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Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 15 - Introduction to Polymer Chemistry - Shaalaa.com
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Solutions for Chapter 15: Introduction to Polymer Chemistry

Below listed, you can find solutions for Chapter 15 of Maharashtra State Board Balbharati for Chemistry 12th Standard HSC for Maharashtra State Board.


Exercises
Exercises [Pages 337 - 339]

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board Chapter 15 Introduction to Polymer Chemistry Exercises [Pages 337 - 339]

Exercises | Q 1. i. | Page 337

Nylon fibres are ______.

  • semisynthetic fibres

  • polyamide fibres

  • polyester fibres

  • cellulose fibres

Exercises | Q 1. ii. | Page 337

Choose the correct option from the given alternatives.

Which of the following is naturally occurring polymer?

  • Teflon

  • Polyethylene

  • PVC

  • Protein

Exercises | Q 1. iii. | Page 337

Silk is a kind of _____ fibre.

  • Semisynthetic

  • Synthetic

  • Animal

  • Vegetable

Exercises | Q 1. iv. | Page 337

Choose the correct option from the given alternatives.

Dacron is another name of ______.

  • Nylon 6

  • Orlon

  • Novolac

  • Terylene

Exercises | Q 1. v. | Page 337

Choose the correct option from the given alternatives.

Which of the following is made up of polyamides?

  • Dacron

  • Rayon

  • Nylon

  • Jute

Exercises | Q 1. vi. | Page 337

Choose the correct option from the given alternatives.

The number of carbon atoms present in the ring of ɛ-caprolactam is ______.

  • Five

  • Two

  • Seven

  • Six

Exercises | Q 1. vii. | Page 337

Terylene is _____.

  • polyamide fibre

  • polyester fibre

  • vegetable fibre

  • protein fibre

Exercises | Q 1. viii. | Page 337

Choose the correct option from the given alternatives.

PET is formed by _______.

  • addition

  • condensation

  • alkylation

  • hydration

Exercises | Q 1. ix. | Page 337

Choose the correct option from the given alternatives.

Chemically pure cotton is _______.

  • acetate rayon

  • viscose rayon

  • cellulose nitrate

  • cellulose

Exercises | Q 1. x. | Page 337

Choose the correct option from the given alternatives.

Teflon is chemically inert, due to presence of _______.

  • C-H bond

  • C-F bond

  • H- bond

  • C=C bond

Exercises | Q 2. i. a. | Page 337

Answer the following in one sentence.

Identify 'A' in the following reaction:

Exercises | Q 2. i. b. | Page 337

Answer the following in one sentence.

Identify 'B' in the following reaction:

\[\ce{H2N -(CH2)6 - NH2 + HOOC - (CH2)4 - COOH ->[N2][533 K]}\]'B'

Exercises | Q 2. ii. a. | Page 337

Complete the following statement.

Caprolactam is used to prepare _______.

Exercises | Q 2. ii. b. | Page 337

Complete the following statement.

Novolac is a copolymer of _______ and _______.

Exercises | Q 2. ii. c. | Page 337

Complete the following statement.

Terylene is _______ polymer of terephthalic acid and ethylene glycol

Exercises | Q 2. ii. d. | Page 337

Complete the following statement.

Benzoyl peroxide used in addition polymerisation acts as _______.

Exercises | Q 2. ii. e. | Page 337

Complete the following statement.

Polythene consists of polymerized_______.

Exercises | Q 2. iii. | Page 338

Draw the flow chart diagram to show the classification of polymers based on the type of polymerization.

Exercises | Q 2. iv. | Page 338

Answer the following in one sentence.

Write examples of addition polymers and condensation polymers.

Exercises | Q 2. v. | Page 338

Answer the following in one sentence.

Name some chain-growth polymers.

Exercises | Q 2. vi. 1) | Page 338

Answer the following in one sentence.

Define the term: Monomer

Exercises | Q 2. vi. 2) | Page 338

Answer the following in one sentence.

Define the term: Vulcanization

Exercises | Q 2. vi. 3) | Page 338

Answer the following in one sentence.

Define the term: Synthetic fibres

Exercises | Q 2. vii. | Page 338

Answer the following in one sentence.

What type of intermolecular force leads to high-density polymer?

Exercises | Q 2. viii. | Page 338

Answer the following in one sentence.

Give one example each of copolymer and homopolymer.

Exercises | Q 2. ix. | Page 338

Answer the following in one sentence.

Identify thermoplastic and thermosetting plastic from the following:

  1. PET
  2. Urea formaldehyde resin
  3. Polythene
  4. Phenol formaldehyde resin
Exercises | Q 3. i. | Page 338

Answer the following.

Write the names of classes of polymers formed according to intermolecular forces and describe briefly their structural characteristics.

Exercises | Q 3. ii. a. | Page 338

Answer the following.

Write the reaction of the formation of Nylon 6.

Exercises | Q 3. ii. b. | Page 338

Answer the following.

Write the reaction of the formation of Terylene.

Exercises | Q 3. iii. | Page 338

Answer the following.

Write structure of natural rubber and neoprene rubber along with the name and structure of their monomers.

Exercises | Q 3. iv. | Page 338

Answer the following.

Name the polymer type in which following linkage is present.

\[\begin{array}{cc}\ce{- C - O -}\\||\phantom{.....}\\
\ce{O\phantom{.....}}\end{array}\]

Exercises | Q 3. v. a. | Page 338

Answer the following.

Write structural formula of the following synthetic rubbers:

SBR rubber

Exercises | Q 3. v. b. | Page 338

Answer the following.

Write structural formula of the following synthetic rubbers:

Buna-N rubber

Exercises | Q 3. v. c. | Page 338

Answer the following.

Write structural formula of the following synthetic rubbers:

Neoprene rubber 

Exercises | Q 3. vi. | Page 338

Answer the following.

Match the following pairs:

Name of polymer Monomer
1. Teflon a. CH2 = CH2
2. PVC b. CF2 = CF2
3. Polyester c. CH2 = CHCl
4. Polythene d. C6H5OH and HCHO
5. Bakelite e. Dicarboxylic acid and polyhydoxyglycol
Exercises | Q 3. vii. 1. | Page 338

Answer the following.

Draw the structures of polymers formed from the following monomers

n HOOC–R–COOH + n HO–R'–OH

Exercises | Q 3. vii. 2. | Page 338

Answer the following.

Draw the structures of polymers formed from the following monomers

H2N–(CH2)5 – COOH

Exercises | Q 3. viii. | Page 338

Name and draw structure of the repeating unit in natural rubber.

Exercises | Q 3. ix. | Page 338

Answer the following.

Classify the following polymers as natural and synthetic polymers

  1. Cellulose
  2. Polystyrene
  3. Terylene
  4. Starch
  5. Protein
  6. Silicones
  7. Orlon (Polyacrylonitrle)
  8. Phenol-formedehyde resins
Exercises | Q 3. x. | Page 338

Answer the following.

What are synthetic resins? Name some natural and synthetic resins.

Exercises | Q 3. xi. | Page 338

Answer the following.

Distinguish between thermosetting and thermoplastic resins. Write example of both the classes.

Exercises | Q 3. xii. | Page 338

Answer the following.

Write name and formula of raw material from which bakelite is made.

Exercises | Q 4. i. a. | Page 338

Identify condensation polymers and addition polymers from the following.

\[\begin{array}{cc}\ce{-(CH2 - CH -)_{n}}\\
\phantom{....}|\\\ce{\phantom{.......}C6H5}
\end{array}\]

Exercises | Q 4. i. b. | Page 338

Identify condensation polymers and addition polymers from the following.

-(CH2 - CH = CH - CH2 -)n

Exercises | Q 4. i. c. | Page 338

Identify condensation polymers and addition polymers from the following.

-(CO(CH2)4 - CONH(CH2)6NH-)n

Exercises | Q 4. i. d. | Page 338

Identify condensation polymers and addition polymers from the following.

Exercises | Q 4. ii. | Page 339

Attempt the following:

Write the chemical reactions involved in the manufacture of Nylon 6,6.

Exercises | Q 4. iii. | Page 339

Attempt the following:

Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N

Exercises | Q 4. iv. 1) | Page 339

Write chemical reaction to prepare the following polymer: Teflon

Exercises | Q 4. iv. 2) | Page 339

Write the reaction involved in the formation of:

Bakelite

Exercises | Q 4. v. | Page 339

Attempt the following:

What is meant by LDP and HDP? Mention the basic difference between the same with suitable examples.

Exercises | Q 4. vi. | Page 339

Attempt the following:

Write preparation, properties and uses of Teflon.

Exercises | Q 4. vii. a. | Page 339

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]

Exercises | Q 4. vii. b. | Page 339

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]

Exercises | Q 4. vii. c. | Page 339

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

Exercises | Q 5. i. | Page 339

Answer the following

How is polythene manufactured? Give their properties and uses.

Exercises | Q 5. ii. | Page 339

Answer the following.

Is synthetic rubber better than natural rubber? If so, in what respect?

Exercises | Q 5. iii. | Page 339

Answer the following.

Write main specialities of Buna-S, Neoprene rubber?

Exercises | Q 5. iv. | Page 339

Write the structure of isoprene and the polymer obtained from it.

Exercises | Q 5. v. | Page 339

Answer the following.

Explain in detail free radical mechanism involved during preparation of addition polymer.

Solutions for Chapter 15: Introduction to Polymer Chemistry

Exercises
Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 15 - Introduction to Polymer Chemistry - Shaalaa.com

Balbharati solutions for Chemistry 12th Standard HSC for Maharashtra State Board chapter 15 - Introduction to Polymer Chemistry

Shaalaa.com has the Maharashtra State Board Mathematics Chemistry 12th Standard HSC for Maharashtra State Board Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Balbharati solutions for Mathematics Chemistry 12th Standard HSC for Maharashtra State Board Maharashtra State Board 15 (Introduction to Polymer Chemistry) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

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Concepts covered in Chemistry 12th Standard HSC for Maharashtra State Board chapter 15 Introduction to Polymer Chemistry are Introduction to Polymer Chemistry, Classification of Polymers, Some Important Polymers, Molecular Mass and Degree of Polymerization of Polymers, Biodegradable Polymers, Commercially Important Polymers, Preparation of Polytetrafluoroethene (Teflon).

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