Chemical Engineering Mcqs

Pressure maintained in the high pressure primary tower of a three stage crude oil distillation system is about ______________ kg/cm2?

(A) 1.5
(B) 3
(C) 6
(D) 12

Submitted By :Ali Uppal

Crude oil produced by Indian oil fields are predominantly _______________ in nature?

(A) Paraffinic
(B) Naphthenic
(C) Asphaltic
(D) Mixed base

Submitted By :Ali Uppal

Complete removal of _____________ from gasoline is done by Unisol process using caustic soda and methyl alcohol?

(A) Waxes
(B) Mercaptans
(C) Asphalt
(D) Diolefins

Submitted By :Ali Uppal

Which of the following has the lowest flash point of all ?

(A) Diesel
(B) Kerosene
(C) Petrol
(D) Furnace oil

Submitted By :Ali Uppal

High aniline point of diesel indicates that, it _____________________?

(A) Is highly aromatic
(B) Has a large ignition delay
(C) Is highly paraffinic
(D) Has a low diesel index

Submitted By :Ali Uppal

Flash point of motor gasoline may be around ______________ °C?

(A) 10
(B) 45
(C) 100
(D) 150

Submitted By :Ali Uppal

Which of the following has the highest viscosity of all (at a given temperature) ?

(A) Naphtha
(B) Fuel oil
(C) Light diesel oil
(D) Petrol

Submitted By :Ali Uppal

Viscosity index of a lubricating oil_________________?

(A) Is the measure of its flash point
(B) Is the measure of variation of viscosity with temperature
(C) Should be low
(D) None of these

Submitted By :Ali Uppal

Mercaptans are added to liquefied petroleum gas (LPG) to _____________________ ?

(A) Reduce its cost
(B) Narrow down its explosion limit
(C) Assist in checking its leakage from cylinder
(D) Increase its calorific value

Submitted By :Ali Uppal

Research octane number refers to the___________________?

(A) Low octane number motor fuels
(B) High octane number motor fuels
(C) High octane number aviation fuels
(D) Unleaded motor fuels

Submitted By :Ali Uppal

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