Polymers Practice Questions - DPP for JEE

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1. (c)
2. (c) Polythene is a linear polymer
3. (d) Nylon–6 can be manufactured from
4. (c) Ebonite is a hard highly vulcanized rubber, containing 20-30%,
rubber.
5. (a) Formula of the monomer indicated in bracket, (CH
3
)
2
C=CH
2
,
corresponds to 2-methylpropene.
6. (b)
7. (a) Neoprene is a polymer of chloroprene. Hence, correct
representation is
 
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1. (c)
2. (c) Polythene is a linear polymer
3. (d) Nylon–6 can be manufactured from
4. (c) Ebonite is a hard highly vulcanized rubber, containing 20-30%,
rubber.
5. (a) Formula of the monomer indicated in bracket, (CH
3
)
2
C=CH
2
,
corresponds to 2-methylpropene.
6. (b)
7. (a) Neoprene is a polymer of chloroprene. Hence, correct
representation is
 
8. (b) Biodegradable polymer is Nylon-2- Nylon-6 which is copolymer
of glycine (H
2
N – CH
2
– COOH) and amino caproic acid (H
2
N–
(CH
2
)
5
 – COOH).
nH
2
N – CH
2
 – COOH + nH
2
N – (CH
2
)
5
– COOH
   Glycine             
9. (b) High density polythene is formed when addition polymerisation of
ethene takes place in a hydrocarbon solvent in presence of catalyst
such as Ziegler-Natta catalyst.
10. (b) (chloroprene) is the monomer of neoprene.
    
11. (b) Buna – N is a copolymer of butadiene
(CH
2
=CH–CH=CH
2
) and acrylonitrile (CH
2
 = CHCN).
12. (b) Nylon 6, 6 has amide linkage capable of forming hydrogen
bonding.
13. (d) The concerned chemical reactions are
(i)   
(ii)
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1. (c)
2. (c) Polythene is a linear polymer
3. (d) Nylon–6 can be manufactured from
4. (c) Ebonite is a hard highly vulcanized rubber, containing 20-30%,
rubber.
5. (a) Formula of the monomer indicated in bracket, (CH
3
)
2
C=CH
2
,
corresponds to 2-methylpropene.
6. (b)
7. (a) Neoprene is a polymer of chloroprene. Hence, correct
representation is
 
8. (b) Biodegradable polymer is Nylon-2- Nylon-6 which is copolymer
of glycine (H
2
N – CH
2
– COOH) and amino caproic acid (H
2
N–
(CH
2
)
5
 – COOH).
nH
2
N – CH
2
 – COOH + nH
2
N – (CH
2
)
5
– COOH
   Glycine             
9. (b) High density polythene is formed when addition polymerisation of
ethene takes place in a hydrocarbon solvent in presence of catalyst
such as Ziegler-Natta catalyst.
10. (b) (chloroprene) is the monomer of neoprene.
    
11. (b) Buna – N is a copolymer of butadiene
(CH
2
=CH–CH=CH
2
) and acrylonitrile (CH
2
 = CHCN).
12. (b) Nylon 6, 6 has amide linkage capable of forming hydrogen
bonding.
13. (d) The concerned chemical reactions are
(i)   
(ii)
(iii)
Thus 64 kg of CaC
2
 gives 26 kg of acetylene which in turn gives 28 kg
of ethylene whose 28 kg gives 28 kg of the polymer, polythene.
14. (c)
15. (b)
16. (b)
17. (a)
18. (b) Nylon-66 is a polyamide, hence it has only –CONH– linkage and
no –COO– linkage.
19. (d)
20. (a) Melamine plastic crockery is a copolymer of HCHO and
Melamine.
21. (b)
22. (d) Nylon and cellulose, both have intermolecular hydrogen bonding,
polyvinyl chloride has dipole-dipole interactions, while natural
rubber has van der Waal forces which are weakest.
23. (a) Neoprene is a polymer of chloroprene
(2 – chloro – 1, 3 – butadiene).
24. (d)
25. (a) Molecules of a polymer, being large in size, scatter light.