Question

The temperature expressed in multiples of 1^oC at which the haze of the wax crystal appears when the oil is cooled under prescribed conditions is called ________

(a) Pour point

(b) Cloud point

(c) Oxidation stability

(d) Acid number

Answer 1

Correct choice is (b) Cloud point

The explanation: The temperature expressed in multiples of 1^oC at which the haze of the wax crystal appears when the oil is cooled under prescribed conditions is called cloud point. The haze of wax crystals is also called as cloud. It appears on the walls of the jar.