Catalytic cracking compared to thermal cracking of r... - Solved MCQs & Answer

6370Chemical EngineeringMedium

Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil________?

AHigher gum forming material in petrol

BHigher sulphur content in the product

CGives higher yield of petrol

DLower octane number of petrol

Correct answer

C. Gives higher yield of petrol

Explanation

The correct answer is Gives higher yield of petrol.

Addition of ________ to the steel helps in increasing the residual magnetism in steel used for making magnets?

________ is added in low carbon steel to raise its yield point?

________ treatment is done for appreciable improvement in viscosity index of lubricating oil?

Which of the following has the highest calorific value (kcal/Nm3)?

With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will________?

Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above ________ °C?