Waste product from processes of the pulp, paper and paperboard industry is called ______________.

Black liquor

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White liquor

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Coloured liquor

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Blue liquor

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Solution

The correct option is A Black liquor
When wood is digested to pulp to make paper, the waste obtained is called black liquor. Approximately 7 tonnes of black liquor are produced in the manufacture of one tonne of pulp. It is usually composed of hemicellulose, and the inorganic chemicals.

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