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Polymers

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Question
CBSEENCH12010807
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Among the following substituted silanes the one which will give rise to cross linked silicone polymer on hydrolysis is

  • R4Si

  • RSiCl3

  • R2SiCl2 

  • R3SiCl

Solution

B.

RSiCl3

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Question
CBSEENCH12010802
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Bakelite is obtained from phenol by reacting with

  • (CH2OH)2

  • CH3CHO

  • CH3COCH3

  • HCHO

Solution

D.

HCHO

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Question
CBSEENCH12010791
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Buna-N synthetic rubber is a copolymer of

  • WiredFaculty and
    H2C = CH – CH = CH2

  • H2C = CH – CH = CH2 and
    H5C6 – CH = CH2

  • H2C = CH – CN and H2C = CH – CH = CH2

  • H2C = CH – CN and  WiredFaculty

Solution

C.

H2C = CH – CN and H2C = CH – CH = CH2

Question
CBSEENCH12010752
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The formation of which of the following polymers involves hydrolysis reaction?

  • Nylon 6

  • Bakelite

  • Nylon 6, 6

  • Terylene

Solution

A.

Nylon 6

Formation of Nylon-6 involves hydrolysis of its monomer (caprolactum) in the initial state.

Question
CBSEENCH12010749
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The polymer containing strong intermolecular forces e.g. hydrogen bonding is

  • natural rubber

  • Teflon

  • Nylon 6,6

  • Polystyrene

Solution

C.

Nylon 6,6

Nylon-6, 6 is a fibre, it contains intermolecular hydrogen bonding.  Nylon-6,6 has amide linkage and hydrogen bond are formed between -CONH- a group of successive chains. 
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