5352. The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

[A]. cracking
[B]. carbonisation
[C]. fractional distillation
[D]. full distillation
✅ The correct answer is option C.

5355. The routing function in a production system design is concerned with

[A]. manpower utilisation
[B]. quality assurance of the product
[C]. machine utilisation
[D]. optimising material flow through the plant
✅ The correct answer is option C.