GATE 2023 Textile Eng: Vat Dyeing Cotton - Temp Effect on Exhaustion & Levelness

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Textile Engineering > GATE 2023 > Dyeing

A sample of cotton fabric is dyed with vat dye at 60^oC till equilibrium dye uptake is reached. Another sample of the same cotton fabric is dyed with the same dye at 90^oC till equilibrium, keeping all other parameters same. Amongst the following, the correct statement(s) is/are _______.

A

Dye exhaustion will be higher at 90^oC as compared to that at 60^oC

B

Dye exhaustion will be lower at 90^oC as compared to that at 60^oC

C

Levelness achieved at 90^oC will be higher as compared to that at 60^oC

D

Levelness achieved at 90^oC will be lower as compared to that at 60^oC

Explanation

Correct : a,d

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