B:-Polyester chords

C:-Nylon chords

D:-Aramid chords

Correct Answer:- Option-C
Question49:-The unit of tensile strength is

A:-N/m

B:-Kg/cm

C:-MPa

D:-%

Correct Answer:- Option-C
Question50:-Which of the statement is not true about radial tyres?
A:-They have good cornering grip
-Good directional stability

C:-Low heat build up

D:-Low fuel consumption

Correct Answer:- Option-B
Question51:-The slope of the stress-strain graph gives the

A:-Modulus
-Tensile strength

C:-Elongation at break

D:-Tear strength

Correct Answer:- Option-A
Question52:-Monomers of butyl rubber are
A:-Isobutene, isoprene
-Isobutadiene, isoprene

C:-lsobutylene, isoprene

D:-Isobutylene, isobutadiene

Correct Answer:- Option-C
Question53:-Friction ratio refers to

A:-Difference in roller speed

B:-Spacing between rollers

C:-Ratio of length to diameter of the rollers

D:-Difference in roller size

Correct Answer:- Option-A
Question54:-Which is used as an anticoagulant?

A:-Ammonia

B:-Sodium sulfite

C:-Formalin

D:-All the above

Correct Answer:- Option-D
Question55:-PAN, PBN etc are used in rubber compounding as

A:-Anti oxidant

B:-Anti ozonant

C:-Both

D:-Filler

Correct Answer:- Option-A
Question56:-Which of the following property decreases with increase in crosslink density?

A:-Modulus

B:-Set

C:-Resilience

D:-Tensile strength

Correct Answer:- Option-B
Question57:-A cellular product with closed cell structure

A:-Sponge

B:-Foam

C:-Both

D:-Micro cellular sheet

Correct Answer:- Option-D
Question58:-EPNR stands for