In paper industry, the chemical compound used for bleaching is :
A
potassium sulphite
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B
calcium sulphate
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C
sulphuric acid
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D
calcium bisulfite
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Solution
The correct option is C calcium bisulfite A bleaching agent is a material that lightens or whitens a substrate through chemical reaction. The bleaching reactions usually involve oxidative or reductive processes that degrade color systems In paper industry, the chemical compound used for bleaching is calcium bisulphate.