Question 62 (Textile Engineering & Fibre Science)
An optical brightener is
(A) | A synthetic bluing agent |
(B) | A colourless dye |
(C) | A flourescent compound |
(D) | An optical whitener |
An optical brightener is
(A) | A synthetic bluing agent |
(B) | A colourless dye |
(C) | A flourescent compound |
(D) | An optical whitener |