Chemical Process
Pasteurisation of milk means

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

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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
Average degree of polymerisation of the polymer is 1966
Polymer was first synthesised in 1966

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