Chemical Process
In sulphate pulp manufacture, the pressure and temperature in the digestor is

1 atm., 170 - 180°C
L atm., 800°C
10 atm., 800 °C
10 atm., 170-180°C

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Chemical Process
Pasteurisation of milk means

Removal of fatty and albuminous substance from it
Inhibiting the growth of micro-organisms without killing them
None of these
Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics

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