a) Soda process
b) Kraft process
c) Semichemical process
d) Sulphite process
Answer: d
Explanation: Sulphite process is mostly used for making glassine. It is also used as a source of cellulose for non-paper applications. It is because sulfite pulps have higher brightness, higher yields at a given kappa, lower odor and lower investment costs as compared to kraft pulps.
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