B:-Sodium chlorite

C:-Calcium hypochlorite

D:-Hydrogen peroxide

Correct Answer:- Option-D
Question39:-The term stoving is associated with

A:-Desizing

B:-Bumning away of protruding fibers

C:-Bumning of vegetable impurities

D:-Bleaching with sulphur dioxide

Correct Answer:- Option-D
Question40:-Shrink resistant wool is prepared by

A:-Carbonisation

B:-Vulcanisation

C:-Acetylation

D:-Chlorination

Correct Answer:- Option-D
Question41:-Which one of these clothings is best suited in fire prone areas?

കാലി

B:-Cotton

Correct Answer:- Option-A
Question42:-Which of the following is the right concentration of sodium hydroxide (W/V} in cold mercerizing?

C:-18-22%
D:-30-34%
Correct Answer:- Option-C
Question43:-The substance removed during degumming
A:-Sericin
B:-Fibroin
C:-Natural colouring matters
D:-Wool wax
Correct Answer:- Option-A
Question44:-Which of the following dyes is readily soluble in water?
A:-Naphthol dyes
B:-Reactive dyes
C:-Disperse dyes
D:-Sulphur dyes
Correct Answer:- Option-B
Question45:-Term scrooping is associated with
A:-Shearing of wool
B:-Dyeing with sulphur dyes
C:-Treating wool with sulphuric acid
D:-Treating silk with acetic acid
Correct Answer:- Option-D
Question46:-Indigo is a natural dye of
A:-Vegetable origin
B:-Animal origin
C:-Mineral origin
D:-None of the above
Correct Answer:- Option-A
Question47:-Cellulose Xanthate is prepared using
A:-Carbon di sulphide
B:-Sulphur dioxide
C:-Hydrogen sulphide
D:-Sodium sulphoxylate formaldehyde
Correct Answer:- Option-A
Question48:-The function of alkali in the dyeing of procion dyes