Pine and fir are difficult to brighten. Colour reduction occurs by alt – McqOptions

MCQOPTIONS

1.	Pine and fir are difficult to brighten. Colour reduction occurs by altering __________ groups, the pulp is sometimes subsequently treated with SO2 to neutralize OH– and reduce any residual peroxide.
A.	a)Chromosome
B.	b)Chromophoric
C.	c)Dithionite
D.	d)Peroxide
Answer» C.

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