Q.1.
The method preferred for determining the molecular weight of a polymer is___________.
-
100%
osmotic pressure
-
0%
gas density
-
0%
lowering of freezing point
-
0%
direct weighing of a single molecule
Q.2.
In the vulcanization of rubber:
-
0%
sulphur reacts to form a new compound
-
0%
sulphur cross-links are introduced
-
0%
sulphur forms a very thin protective layer over rubber
-
0%
All of the above
Explanation
Q.3.
The field of polymer chemistry was revolutionised by :
-
0%
Kharasch in USA
-
0%
Kael Ziegler in Germany
-
0%
Giulio Natta in Italy
-
0%
Barton in England
Q.4.
Soft drinks and baby-feeding bottles are generally made of:
-
0%
Polyurea
-
0%
polyurethane
-
0%
Polyester
-
0%
Polyamide
-
0%
polystyrene
Q.5.
Polymer formation form monomers starts by:
-
0%
condensation reaction between monomers
-
0%
conversion of monomer to monomer ions by protons
-
0%
coordination reaction between monomers
-
0%
hydrolysis of monomers
Q.6.
Which one of the following is used to make 'non-stick' cookware?
-
0%
Polystyrene
-
0%
PVC
-
0%
Polyethylene terephthalate
-
0%
Polytetra fluoroethylene
Explanation
Q.7.
The commercial name of poly(methyl methacrylate) is:
-
0%
Lucite
-
0%
Plexiglas
-
0%
Perspex
-
0%
All the above
Q.8.
Z-average molar mass $$(\bar M _ {z})$$ is defined as:
-
0%
$$\dfrac{\sum NiMi^2}{\sum NiMi}$$
-
100%
$$\dfrac{\sum NiMi}{\sum Ni}$$
-
0%
$$\dfrac{\sum NiMi^3}{\sum NiMi^2}$$
-
0%
$$\dfrac{\sum NiMi^3}{\sum NiMi}$$
Q.9.
The abbreviation PDI refers to__________.
-
0%
name of the polymer
-
0%
polydispersity index of the polymer
-
0%
application of the polymer
-
0%
polydiagonal index
Q.10.
Which of the following is coated as a thin layer on the inner side of non-stick pans?
-
0%
Bakelite
-
0%
PVC
-
0%
Teflon
-
0%
Polypropylene
Explanation
Q.11.
Vulcanised rubber resists:
-
0%
wear and tear due to friction
-
0%
cryogenic temperature
-
0%
high temperature
-
0%
action of acids
Q.12.
$$F_2C=CF_2$$ is a monomer of:
-
0%
Teflon
-
0%
Glyptal
-
0%
Buna-S
-
0%
Nylon 6
Q.13.
Match column I with column II.
Choose the correctly matched option.
| Column I | Column II |
| P. Non-stick coating | (i). Melamine |
| Q. Flame resistant | (ii). Polystyrene |
| R. First fully synthetic fibre | (iii). Teflon |
| S. Thermoplastic | (iv). Nylon |
-
0%
(P) - (ii), (Q) - (i), (R) - (iii), (S) - (iv)
-
0%
(P) - (iii), (Q) - (i), (R) - (iv), (S) - (ii)
-
0%
(P) - (ii), (Q) - (iii), (R) - (iv), (S) - (i)
-
0%
(P) - (iii), (Q) - (iv), (R) - (ii), (S) - (i)
Q.14.
Pick out the incorrect statement amongst the following.
-
0%
Nylon clothing can stand high temperature and are therefore good to wear in summers
-
0%
Thermosetting plastics do not become soft on heating
-
0%
Addition polymers are formed without the elimination of by-product molecules
-
0%
Natural rubber is obtained as latex from rubber trees
Q.15.
Identify the fibres, $$P,\,Q$$ and $$R$$ using the given hints.
$$P.\;\;$$ It does not get wrinkled easily, remains crisp and is easy to wash.
$$Q.\;\;$$ It was the first fully synthetic fibre.
$$R.\;\;$$ Although it is obtained from a natural source, yet it is a man-made fibre.
$$P.\;\;$$ It does not get wrinkled easily, remains crisp and is easy to wash.
$$Q.\;\;$$ It was the first fully synthetic fibre.
$$R.\;\;$$ Although it is obtained from a natural source, yet it is a man-made fibre.
-
0%
P - Rayon, Q - Polythene, R - Terylene
-
0%
P - Polyester, Q - Nylon, R - Rayon
-
0%
P - Nylon, Q - Polythene, R - Bakelite
-
0%
P - Melamine, Q - Nylon, R - Polyester
Q.16.
Natural rubber is heated with an element X to make it hard, strong and more elastic. X is:
-
0%
zinc
-
0%
sulphur
-
0%
lead
-
0%
$$H_2$$
Q.17.
Match the terms of column A correctly with the phrases given in column B.
| Column-A | Column-B |
| (i) Polyester | (a) Prepared by using wood pulp |
| (ii) Teflon | (b) Used for making parachutes and stockings |
| (iii) Rayon | (c) Electrical switches |
| (iv) Nylon | (d) Fabrics do not wrinkle easily |
| (v) Bakelite | (e) Fire resistant clothes |
| (vi) Melamine | (f) Used to make non-stick cookwares |
-
0%
(i)-(d), (ii)-(f), (iii)-(a), (iv)-(b), (v)-(c), (vi)-(e)
-
0%
(i)-(f), (ii)-(d), (iii)-(a), (iv)-(b), (v)-(c), (vi) -e)
-
0%
(i)-(d), (ii)-(f), (iii)-(b), (iv)-(a), (v)-(c), (vi)-(e)
-
0%
(i)-(a), (ii)-(f), (iii)-(d), (iv)-(b), (v)-(c), (vi)-(e)
Q.18.
Which of the following free radicals is the most stable ?
-
0%
primary
-
0%
methyl
-
0%
secondary
-
0%
tertiary
Explanation
Q.19.
Rubber is hardened for making tyres by:
-
0%
adding $$H_2$$
-
0%
adding carbon black
-
0%
saturating it
-
0%
All of the above
Q.20.
Fomaldehyde is the starting material for the manufacture of :
-
0%
Bakelite
-
0%
Caprolactam
-
0%
D.D.T
-
0%
Rayon
Q.21.
The structure of isoprene is:
-
0%
$$CH_2\, =\, C\, (C_2H_5)\, -\, CH\, =\, CH_2$$
-
0%
$$CH_2\, =\, C\, (OCOH_3)\, -\, CH\, =\, CH_2$$
-
0%
$$CH_2\, =\, C\, (CH_3)\, -\, CH\, =\, CH_3$$
-
0%
$$CH_2\, =\, CH\, -\, C\, =\, CH$$
Explanation
Q.22.
Which of the following is thermoresistant polymer ?
-
0%
Orlon
-
0%
Polythene
-
0%
Teflon
-
0%
Bakelite
Q.23.
Sulphur is used in:
-
0%
welding
-
0%
electroplating
-
0%
vulcanising rubber
-
0%
the manufacture of paints
Q.24.
The process by which smaller molecules combine to give a molecule with a higher molecular weight is known as :
-
0%
condensation
-
0%
polymerisation
-
0%
catenation
-
0%
isomerisation
Q.25.
Which polymer is used in non-stick cooking vessels?
-
0%
Polythene
-
0%
Isoprene
-
0%
Teflon
-
0%
Neoprene
Q.26.
A synthetic rubber which is resistant to the action of oils, gasoline and other solvents is:
-
0%
buna-S
-
0%
polyisoprene
-
0%
neoprene
-
0%
polystyrene
Q.27.
Which one of the following is not a biopolymer?
-
0%
Cellulose
-
0%
$$Nylon-6$$
-
0%
Insulin
-
0%
DNA
Q.28.
The monomer of neoprene is:
-
0%
1, 3-Butadiene
-
0%
2-Chloro-1, 3-butadiene
-
0%
2-Methyl-1, 3-butadiene
-
0%
vinyl chloride
Explanation
Q.29.
The structure of bakelite is :
-
0%
-
0%
-
0%
-
0%
Explanation
Q.30.
Nylon-66 is an example of:
-
0%
polypropylene
-
0%
polyester
-
0%
polyamide
-
0%
polystyrene
Explanation
Q.31.
Dacron is obtained by the condensation polymerisation of :
-
0%
dimethyl terephthalate and ethylene glycol
-
0%
terephthalic acid and formaldehyde
-
0%
phenol and phthalic acid
-
0%
phenol and formaldehyde
Q.32.
Identify the co-polymer from the following:
-
0%
$$[-CH_2-CH=CH_2-CH_2-CH(C_6H_5)-CH_2-]_n$$
-
0%
$$[-CF_2-CF_2-]_n$$
-
0%
$$[-CH_2-C(Cl)=CH-CH_2-]_n$$
-
0%
$$[-CH_2-CH(Cl)-]_n$$
Q.33.
Synthetic polymer among the following is :
-
0%
protein
-
0%
plastic
-
0%
starch
-
0%
cellulose
-
0%
nucleic acid
Q.34.
Example of a biodegradable polymer pair is:
-
0%
nylon-6,6 and terylene
-
0%
PHBV and dextron
-
0%
bakelite and PVC
-
0%
PET and polythylene
Q.35.
Nylon-6 is manufactured from which of the following?
-
0%
maleic anhydride and hexamethylene diamine.
-
0%
caprolactum
-
0%
adipic acid and hexamethylene diamine.
-
0%
sebasic acid and hexamethylene diamine.
Explanation
Q.36.
A condensation polymer among the following polymers is:
-
0%
Teflon
-
0%
Polysterene
-
0%
PVC
-
0%
Dacron
Q.37.
The s-block element used as a catalyst in the manufacture of Buna-S rubber is :
-
0%
$$Mg$$
-
0%
$$Ca$$
-
0%
$$Ba$$
-
0%
$$Na$$
Q.38.
Which of the following is not true?
-
0%
In vulcanisation the rubber becomes harder and stronger
-
0%
Natural rubber has 'trans' configuration at every double bond
-
0%
Buna-S is a co-polymer of Butene and styrene
-
0%
Natural rubber is $$1, 4$$-polymer of isoprene
Q.39.
__________ is used for making parachutes and stockings.
-
0%
Cotton
-
0%
Nylon
-
0%
Wool
-
0%
Bakelite
Q.40.
Which one of the following is not a correct match?
-
0%
Teflon - Tetrafluoroethylene -
0%
Plexi glass - Methyl methacrylate -
0%
Orlon - Glycerol, phthalic anhydride -
0%
Buna-S - Styrene, 1-3 butadiene
Explanation
Q.41.
Bakelite is a _________.
-
0%
phenol-formaldehyde resin
-
0%
phenol-acetaldehyde resin
-
0%
phenol-propanaldehyde resin
-
0%
resin in alcohol
Explanation
Q.42.
Sulphur is used for vulcanization of rubber to make it:
-
0%
hard
-
0%
elastic
-
0%
malleable
-
0%
soft
Q.43.
$$Buna-N$$, a synthetic rubber is copolymer of:
-
0%
$$H_{2}C = CH - CH = CH_{2}$$ and $$H_{5}C_{6} - CH = CH_{2}$$
-
0%
$$H_{2}C = CH- CN$$ and $$H_{2}C = CH - CH = CH_{2}$$
-
0%
$$H_{2}C = CH -\overset {\overset {Cl}{|}}{C} = CH_{2}$$ and $$H_{2}C = CH - CH = CH_{2}$$
-
0%
$$H_{2}C = CN - CN$$ and $$H_{2}C = CH - \underset {\underset {Cl}{|}}{C} = CH_{2}$$
Explanation
Q.44.
Bakelite is a polymer of
-
0%
benzaldehyde and phenol
-
0%
acetaldehyde and phenol
-
0%
formaldehyde and phenol
-
0%
formaldehyde and benzyl alcohol
Q.45.
Teflon constitutes:
-
0%
carbon,flourine & hydrogen
-
0%
carbon,chlorine & hydrogen
-
0%
carbon & flourine
-
0%
carbon & chlorine
Q.46.
The IUPAC name for Teflon is:
-
0%
polytrifluoroethane
-
0%
polytetrafluoroethane
-
0%
polytrifluoroethylene
-
0%
polytetrafluoroethylene
Q.47.
Which of the following is monomer of natural rubber?
-
0%
Isoprene
-
0%
Chloroprene
-
0%
Caprolactum
-
0%
Styrene
Q.48.
Which of the following is incorrect regarding natural rubber ?
-
0%
It is cis-polyisoprene
-
0%
It is amorphous in nature
-
0%
It has syndiotactic stereochemistry
-
0%
Molecules of rubber have coiled conformation
Q.49.
Which of the following polymer is not an addition polymer?
-
0%
Teflon
-
0%
BUNA-N
-
0%
PAN
-
0%
Propylene
Q.50.
Synthetic human hair wigs are made from a copolymer of vinyl chloride and acrylonitrile and is called:
-
0%
PVC
-
0%
Polyacrylonitrile
-
0%
Cellulose
-
0%
Dynel