Polymers

1991-1-i-a-chtech-2mark

1991-1-i-a-chtech

Match the following:

I. Phenol formaldehyde

Answer 1

II. Nylon

Answer 2

III. High purity polyvinyl chloride

Answer 3

IV. Styrene butadiene rubber

Answer 4

1999-2-20-chtech-2mark

1999-2-20-chtech

Match each polymer mentioned in the left-hand column with the corresponding chemical nature listed in the right-hand column.

I. Perspex

Answer 1

II. Rayon

Answer 2

2003-28-chtech-1mark

2003-28-chtech

â€˜Nylon 66â€™ is so named because

the average degree of polymerization of the polymer is 1966
the number of carbon atoms between two nitrogen atoms are 6
the number of nitrogen atoms between two carbon atoms are 6
the polymer was first synthesized in 1966

2003-85-chtech-2mark

2003-85-chtech

Identify the group in which all the polymers mentioned can be used to make fibers

Butadiene copolymers, Polyamides, Urea aldehydes
Cellulose derivatives, Polyisoprene, Polyethylene
Cellulose derivatives, Polyamides, Polyurethanes
Polypropylenes, Polyvinyl-chloride, Silicones

2004-89-chtech-2mark

2004-89-chtech

Match the product in Group I with the nature of the reaction in Group II.

Group I	Group II
P. Polyethylene	1. Condensation polymerization
Q. Nylon	2. Addition polymerization
R. Polystyrene

P - 1, Q - 1, R - 2
P - 2, Q - 2, R - 1
P - 1, Q - 2, R - 1
P - 2, Q - 1, R - 2

2005-22-chtech-1mark

2005-22-chtech

Which of the following is NOT employed in the commercial production of linear polyvinyl chloride ?

Emulsion polymerization
Suspension polymerization
Addition polymerization
Condensation polymerization

2005-77-chtech-2mark

2005-77-chtech

Match the raw materials in Group II with the products in Group I.

Group I	Group II
(P) Nylon - 66	(1) Chlorodifluro methane
(Q) Terylene	(2) Dimethyl terephthalate and ethylene glycol
	(3) Acetylene and hydrogen cyanide
	(4) Hexamethylene diamine and adipic acid

P - 3, Q - 4
P - 4, Q - 3
P - 4, Q - 2
P - 1, Q - 2

2006-68-chtech-2mark

2006-68-chtech

Pair the following polymers with their chain characteristics

P. HDPE	1. Very few branches
Q. LDPE	2. Short and regular branches
R. LLDPE	3. High branching with both short and long chain branches

P - 1, Q - 2, R - 3
P - 2, Q - 1, R - 3
P - 1, Q - 3, R - 2
P - 2, Q - 3, R - 1

2007-69-chtech-2mark

2007-69-chtech

Match the synthetic fibres in Group 1 with their classification in Group 2.

Group 1	Group 2
P. Rayon	(1) polyamide
Q. Orlon	(2) polyester
R. Dacron	(3) cellulose
	(4) acrylic

P - 2, Q - 3, R - 1
P - 3, Q - 4, R - 2
P - 3, Q - 1, R - 3
P - 3, Q - 3, R - 4

2010-46-chtech-2mark

2010-46-chtech

Match each of the following techniques of polymerization in Group I, with the corresponding process characteristics in Group II.

	Group 1		Group 2
P.	Bulk	I.	Polymer with very high molecular weight can be obtained
Q.	Solution	II.	Heat removal is crucial but very difficult
R.	Suspension	III.	Small amount of undesired low molecular weight polymer is formed
S.	Emulsion	IV.	Polymer concentration in the product stream is low

P - I, Q - II, R - III, S - IV
P - II, Q - IV, R - III, S - I
P - II, Q - III, R - IV, S - I
P - II, Q - III, R - I, S - IV

2010-47-chtech-2mark

2010-47-chtech

Match each of the polymers in Group I, with the raw materials in Group II, from which they are made.

Group 1	Group 2
P. Polyester	I. Ethylene glycol
Q. Polyamide	II. Adipic acid
R. Viscose rayon	III. Cellulose
S. Epoxy resin	IV. Bisphenol

P - I, Q - II, R - III, S - IV
P - II, Q - I, R - III, S - IV
P - I, Q - II, R - IV, S - III
P - III, Q - II, R - IV, S - I

2011-1-chtech-1mark

2011-1-chtech

Match the polymerisation mechanisms in Group I with the corresponding polymers in Group II.

Group 1	Group 2
P. Chain growth/addition polymerisation	I. Polyethylene
Q. Step growth/condensation polymerisation	II. Polyvinyl chloride
	III. Polyethylene terephthalate

P - III; Q - I, II
P - I, II; Q - III
P - II, III; Q - I
P - I; Q - II, III

2012-47-chtech-2mark

2012-47-chtech

Match the polymer in Group I to the polymer characteristic in Group II.

Group I	Group II
P. Polyethylene	I. Elastomer
Q. Phenol-formaldehyde polymer	II. Fiber
R. Polyisoprene	III. Thermoplastic
S. Polyester	IV. Thermosetting polymer

P - III, Q - IV, R - I, S - II
P - IV, Q - II, R - III, S - I
P - III, Q - II, R - I, S - IV
P - IV, Q - III, R - I, S - II

2015-23-chtech-1mark

2015-23-chtech

Match the polymer mentioned on the left with the catalyst used for its manufacture given on the right.

(I) Low density polyethylene	(P) Ziegler-Natta catalyst
(II) High density polyethylene	(Q) Traces of oxygen
(III) Polyethylene terephthalate	(R) Buytl lithium
(IV) Polyvinyl chloride	(S) Antimony

I - Q, II - R, III-S, IV - P
I - S, II - P, III-Q, IV - R
I - Q, II - P, III-S, IV - R
I - S, II - R, III - P, IV - Q

2017-24-chtech-1mark

2017-24-chtech

Match the polymerization processes in Group-1 with the polymers in Group-2.

Group-1	Group-2
P) Free radical polymerization	I) Nylon 6,6
Q) Ziegler Natta polymerization	II) Polypropylene
R) Condensation polymerization	III) Poly vinyl chloride

Choose the correct set of combinations.

P-I, Q-II, R-III
P-III, Q-II, R-I
P-I, Q-III, R-II
P-II, Q-I, R-III

1988-10-iii-chtech-2mark

1988-10-iii-chtech

Raw materials for the manufacture of Nylon 6-6 are ----------------- and -----------------

Answer

1989-10-iii-a-chtech-1mark

1989-10-iii-a-chtech

Phenol formaldehyde is made by ----------------- polymerization process, in which molecules of ----------------- are eliminated.

Answer

1989-20-iii-chtech-3mark

1989-20-iii-chtech

Classify the following as thermoplastic resin, thermosetting resin, or elastomer:
Polypropylene, urea formaldehyde, cellulose derivatives, epoxy resins, butadiene copolymer, polyisoprene.

Answer

1992-1-b-chtech-2mark

1992-1-b-chtech

For manufacture of styrene, the raw materials are ----------------- and ----------------- . One important copolymer of styrene is ----------------- which is widely used in the manufacture of automobile tyres.

Answer

Chemical Technology - GATE Questions