Chemical Process
The main aim behind cooling the digested chip at the bottom portion of the digestor by injecting cold black liquor is to

None of these
Remove lignin by way of crystallisation
Avoid mechanical weakening of fibre
Increase the cellulose content

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Chemical Process
The chamber process is

Non-catalytic and operates only on pyrites
A batch process for directly producing high strength (98 to 100%) H₂SO₄
Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums
None of these

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Chemical Process
Pick out the wrong statement pertaining to solvent extraction of oil.Rate of extraction

Increases Considerably with the rise of temperature
Decreases with decrease of thickness of the flakes
Increases with the increasing flake size keeping the flake thickness constant
Decreases as the moisture content of flakes increases

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