Consider the Assertion and Reason given
below.
Assertion (A) : Ethene polymerized in the
presence of Ziegler Natta Catalyst at high
temperature and pressure is used to make
buckets and dustbins.
Reason (R) : High density polymers are closely
packed and are chemically inert.
Choose the correct answer from the following:
03Easy52×since 2002Q1687
Preparation of Bakelite proceeds via reactions.
04Hard52×since 2002Q1721
Match List I with List II
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List I (Name of polymer)
List II (Uses)
A.
Glyptal
I.
Flexible pipes
B.
Neoprene
II.
Synthetic wool
C.
Acrilan
III.
Paints and Lacquers
D.
LDP
IV.
Gaskets
Choose the correct answer from the options given below :
05Easy52×since 2002Q1682
Poly β –hydroxybutyrate-co-β-hydroxyvalerate (PHBV) is a copolymer of
06Hard52×since 2002Q1680
The correct match between Item-I and Item-II is :
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Item - I
Item - II
(a)
High density polythene
(I)
Peroxide catalyst
(b)
Polyacrylonitrile
(II)
Condensation at high
temperature & pressure
(c)
Novolac
(III)
Ziegler-Natta Catalyst
(d)
Nylon 6
(IV)
Acid or base catalyst
07Easy52×since 2002Q1681
Which of the following is a condensation polymer?
08Medium52×since 2002Q1688
In polymer Buna-S : 'S' stands for :
09Easy52×since 2002Q1670
Which of the following is fully fluorinated polymer?
10Easy52×since 2002Q1671
Bakelite is obtained from phenol by reacting with
11Easy52×since 2002Q1672
The polymer containing strong intermolecular forces e.g. hydrogen bonding, is
12Easy52×since 2002Q1673
The species which can best serve as an initiator for the cationic polymerization is :
13Easy52×since 2002Q1674
Which one is classified as a condensation polymer?
14Easy52×since 2002Q1675
Assertion :
Rayon is a semisynthetic polymer whose properties are better than natural cotton.
Reason :
Mechanical and aesthetic properties of cellulose can be improved by acetylation.
15Easy52×since 2002Q1676
Which of the following polymers is synthesized using a free radical
polymerization technique ?
16Easy52×since 2002Q1677
The formation of which of the following polymers involves hydrolysis reaction?
17Easy52×since 2002Q1678
Which of the following statements is not true ?
18Easy52×since 2002Q1679
Which of the following is a thermosetting polymer?
19Easy52×since 2002Q1683
The two monomers for the synthesis of Nylon 6, 6 are
20Easy52×since 2002Q1684
Which one of the following polymers is not obtained by condensation polymerisation?