Chemical Process
Pasteurisation of milk means

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

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Chemical Process
Nylon 66 is so named because the

Number of nitrogen atoms between two carbon atoms are 6
Number of carbon atoms between two nitrogen atoms are 6
Polymer was first synthesised in 1966
Average degree of polymerisation of the polymer is 1966

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