Question is ⇒ Neoprene is rendered non-inflammable, because of, Options are ⇒ (A) its cross-linked structure., (B) its linear chain structure., (C) the presence of chlorine atoms in its monomer., (D) the absence of chlorine atoms in its monomer., (E) , Leave your comments or Download question paper.

Question is ⇒ Neoprene is rendered non-inflammable, because of, Options are ⇒ (A) its cross-linked structure., (B) its linear chain structure., (C) the presence of chlorine atoms in its monomer., (D) the absence of chlorine atoms in its monomer., (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Neoprene is rendered non-inflammable, because of
A.	its cross-linked structure. [Wrong Answer]
B.	its linear chain structure. [Wrong Answer]
C.	the presence of chlorine atoms in its monomer. [Correct Answer]
D.	the absence of chlorine atoms in its monomer. [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ Vulcanisation of raw rubber makes it
soft
less elastic
plastic
tacky

⇒ Which of the following is the most important rubber compounding ingradient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
Phosphorous
Carbon black
Pine oil
Rosin

⇒ __________ fibres are made of polyamides.
Dacron
Nylon
Rayon
Orion

⇒ Starting material for the production of SBR is
ethyl alcohol
ethylene
both (a) & (b)
neither (a) nor (b)

⇒ __________ is not a condensation polymer.
Teflon
Nylon-66
Dacron
Polystyrene

⇒ Nylon-66 is a polyamide of
hexamethylene diamine and adipic acid.
adipic acid and methyl amine.
vinyl chloride and formaldeyde.
none of these.

⇒ In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer ?
PTFE
Buna-S
PMMA
Polycaprolactum

⇒ Polyvinyl acetate is never used for making
moulded articles
fibres
adhesives
all (a), (b) & (c)

⇒ The organic acid monomer in nylon 66 is
sebasic acid
terephthalic acid
adipic acid
benzoic acid

⇒ Condensation polymerisation of caprolac-tum is carried out in the reactor maintained at a temperature of __________ °C for producing nylon-6.
-20 to 25
50 to 75
100 to 150
250-280

⇒ Thermosetting resins/polymers as compared to thermoplastic ones are
soluble in all organic solvents.
more brittle.
formed by addition polymerisation only.
easily reshaped & reused.

⇒ Caprolactum, a raw material for the manufacture of nylon-6, is produced from
phenol
naphthalene
benzene
pyridine

⇒ Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
saturated polyester
polyurathane
polystyrene
either (b) or (c)

⇒ Polypropylene is preferred to polythene, because the former is
non-inflammable
harder
stronger
both(b) & (c)

⇒ Polymerisation process in which two or more monomers of chemically different nature take part is called
copolymerisation
addition polymerisation
chain polymerisation
none of these

⇒ Which of the following rubbers has the widest service temperature range (-75 to 275°C) ?
Butyl rubber
Silicon rubber
Nitrile rubber
Silicone rubber

⇒ Neoprene is chemically known as
polybutandiene
styrene butadiene rubber (SBR)
polyurethane
poly chloroprene

⇒ Low density polythene as compared to high density polythene is
harder
tougher
chemically inert
more flexible

⇒ Vulcanisation of rubber
decreases its tensile strength.
increases its ozone & oxygen reactivity.
increases its oil & solvent resistance.
converts its plasticity into elasticity.

⇒ Polymerisation of poly functional monomers produces polymers having
good machanical strength
low viscosity
low melting point
none of these

⇒ Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of
cold SBR
butyl rubber
Bunai N
Buna S

⇒ Main constituent of cotton fibre is
lignin
cellulose
starch
gelatine

⇒ Thiokol is nothing but
polysulphide rubber
polyamide fibre
engineering plastic
exponded polystyrene

⇒ Silicone is a/an
monomer
inorganic polymer
thermoplastic material
a natural polymer

⇒ Thermosplastic materials
do not soften on application of heat.
are heavily branched molecules.
are solvent insoluble.
none of these.

⇒ Dacron is a
condensation polymerisation product of hexamethylene diamine and adipic acid.
condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol.
thermosetting material.
none of these.

⇒ Properties of a polymer is affected by the
chain length.
intermolecular forces.
branching & cross-linking.
all (a), (b).

⇒ The main use of butadiene is
as a plasticiser for unsaturated polyester.
in the manufacture of synthetic rubber.
as an anti-skimming agent in paint.
none of these.

⇒ Ebonite is a/an
highly vulcanised rubber.
natural rubber.
unvulcanised raw rubber.
adhesive.

⇒ Elastomers are
thermosetting material.
exemplified by protein derivatives.
having high flexural strength.
having very high tensile strength and heat resistance.