Chemical Process
Digestion of wood-base materials (for manufacture of pulp) is done to

Remove lignin
Produce long fibres
None of these
Prevent deterioration on storage

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Chemical Process
Pick out the true statement pertaining to water treatment.

Activated carbon can be used for taste & odour control without subsequent filtration
Slow sand filters can remove colour completely
Normally, the turbidity is removed by adding a coagulent prior to sedimentation
Application of activated carbon reduces the temporary hardness of water

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