Starting material for the production of SBR is

__________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.

A

Percent elongation

B

Resilience

C

Freezing point

D

Strength

Starting material for the production of styrene butadiene rubber (SBR) is

A

Ethyl alcohol

B

Ethylene

C

Both A & B

D

Neither A nor B

Polymerisation reactor used for the production of styrene butadiene rubber (SBR) is made of

A

Cast iron

B

Stainless steel or glass lined vessel

C

Karbate

D

Wrought iron

Polymerisation reactor used in the production of styrene butadiene rubber (SBR) is made of

A

Stainless steel or glass lined steel

B

Nickel clad steel

C

High silicon cast iron

D

Aluminium

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

A

Poorer tensile strength

B

Poorer resistance to oxidation

C

Greater amount of heat build-up under heavy loading

D

All of the above

Styrene butadiene rubber (SBR) is never used for making

A

Coated fabrics

B

Front wheel tyres of aeroplanes (i.e., heavy duty tyres)

C

Gaskets

D

Soles of shoes

Temperature and gage pressure maintained during the manufacture of cold SBR (styrene butadiene rubber) are

A

5°C and 1 kgf/cm²

B

-20°C and 1 kgf/cm²

C

0°C and 1 kgf/cm²

D

0°C and 3 kgf/cm²

Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butediene rubber) are

A

50°C and 3 - 4 kg/cm²

B

50°C and 1 kgf/cm²

C

250°C and 10 kgf/cm²

D

250°C and 1 kgf/cm²

Styrene butadiene rubber (SBR) as compared to natural rubber has

A

Poor tensile strength

B

Poorer resistance

C

Greater amount of heat build up heavy loading

D

All of the above

Styrene butadiene rubber (SBR) is

A

A natural rubber

B

A synthetic polymer

C

A synthetic monomer

D

Another name of silicone rubber

Starting material for the production of SBR is

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