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Waste product obtained in the conversion of pulpwood to paper pulp by Kraft process is __________

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Waste product obtained in the conversion of pulpwood to paper pulp by Kraft process is __________

(a) Yellow liquor

(b) Green liquor

(c) White liquor

(d) Black liquor

I had been asked this question in class test.

The doubt is from Natural Products topic in division Natural Products of Chemical Technology

1 Answer

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Best answer
Right choice is (d) Black liquor

Best explanation: Black liquor also known as wood digestion liquor is the waste product produced. White liquor is produced in the chemical recovery of sulfate pulp digestion liquor which is fed to the digestors.

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