Q.1
Pickout the wrong statement.
Q.2
The monomer for the production of neoprene rubber is
Q.3
Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of
Q.4
Orion is
Q.5
__________ moulding is used for shaping of thermosetting plastics exclusively.
Q.6
Transistor parts and refrigerator components are normally made of
Q.7
Polyvinyl chloride (PVC) is
Q.8
In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
Q.9
Which of the following is not a polyolefin?
Q.10
Which of the following is not a polymer of two monomers?
Q.11
Catalyst used in the production of high density polythene by low pressure Ziegler process is
Q.12
Ion exchange resins are made of
Q.13
Which of the following types of polymers has the strongest inter particle forces?
Q.14
Nylon-6 is a
Q.15
Nylon-6 is manufactured from
Q.16
Which of the following is not an elastomer?
Q.17
Nylon-66 is manufactured from
Q.18
Polymerisation product of C₂F₄ (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called
Q.19
In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
Q.20
Pick out the wrong statement.
Q.21
The inter particle forces between linear chains in nylon-66 are __________ bonds.
Q.22
Nylon-66 is a polyamide of
Q.23
Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids?
Q.24
Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is
Q.25
Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten
Q.26
Low pressure Zeigler process of polythene manufacture
Q.27
Automobile steering wheels are normally made of
Q.28
Pick out the wrong statement.
Q.29
Polymerisation of poly functional monomers produces polymers having
Q.30
The generic chemical name for the class of polymers which are commerically known as nylons is
Q.31
Plastic articles are normally produced by __________ moulding.
Q.32
Which of the following is not a thermoplastic material?
Q.33
Which of the following is not present in bagasse fibre?
Q.34
Main constituent of natural rubber is
Q.35
Density of low density polythene is about __________ gm/c.c.
Q.36
Neoprene is a
Q.37
Neoprene is the trade name of
Q.38
Which of the following additives are added to plastics to make it impervious to X-rays?
Q.39
Mastication of rubber means
Q.40
Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
Q.41
Polycaprolactum is also known as
Q.42
Which of the following low molecular weight (<10⁴ ), soft & waxy polymer is used in chewing gum?
Q.43
Polypropylene is preferred to polythene, because the former is
Q.44
Diphenylamine is added to rubber to
Q.45
Which of the following is generally not drawn into fibre?
Q.46
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?
Q.47
Branched chair polymers as compared to linear polymers have
Q.48
__________ is normally used for the manufacture of refrigerator components and transistor parts.
Q.49
Polycaprolactum (Nylon - 6) is produced by the condensation polymerisation of caprolactum at 240-280°C in which the conversion of caprolactum is about __________ percent.
Q.50
Unbreakable crockeries are made from __________ polymers.
0 h : 0 m : 1 s