Viscose rayon . . . . . . . .

In the manufacture of viscose rayon, the raw material used industrially is

A

Recalyptious wood

B

Bamboo

C

Bagasse

D

Fine teak wood

Viscose rayon is

A

Cellulose nitrate

B

Regenerated cellulose nitrate

C

Regenerated cellulose acetate

D

None of these

Viscose rayon is chemically

A

Cellulose nitrate

B

Regenerated cellulose nitrate

C

Cellulose acetate

D

Regenerated cellulose acetate

For spinning viscose rayon, the extrusion spinnerettes are made of

A

Platinum or gold alloys

B

High carbon steel

C

Aluminium

D

Nickel

A polymeric substance used to make parachute is: (A) Rayon (B) Viscose (C) Cotton (D) Terylene

A

C

B

D

C

B

D

A

Viscose rayon

A

Cannot be made from sulphite pulp

B

Utilises H₂SO₄, NaOH and CS₂ during its manufacture

C

Cannot yield textile grade fibre

D

None of these

What is the main raw material of Viscose rayon?

A

Bagasse

B

Sugar

C

Wood pulp

D

Polyester

Rayon is superior to cotton in making gauge for wound treatment, because rayon

A

Is a synthetic polymer

B

Does not stick to the wound unlike cotton

C

Can absorb over 90% of its own weight of water

D

Both B & C

Viscose is a weak fibre.

A

True

B

False

What are the series of steps involved in viscose process?

A

Alkali conversion-Solubilization-Acid regeneration

B

Acid regeneration-Solubilization-Alkali conversion

C

Solubilization-Acid Regeneration-Alkali conversion

D

Acid Regeneration-Alkali conversion-Solubilization

Viscose rayon . . . . . . . .

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