PETROLEUM REFINERY ENGINEERING QUIZ

Smoke point of kerosene expresses its

Burning characteristics

Lamp wick wetting characteristics

Aromatic content directly

Luminosity characteristics

TRUE ANSWER : ?
YOUR ANSWER : ?

Flash point of an oil gives an idea of the

Explosion hazards

All of these

Amount of low boiling fraction present

Nature of boiling point diagram of the system

TRUE ANSWER : ?
YOUR ANSWER : ?

The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

Maintain the reaction temperature

Hydrogenate the feed stock

Obviate catalyst poisoning

Sustain the reactor pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

Diesel index.(an alternative index for expressing the quality of diesel) is

Not related to aniline point

All of these

Equal to cetane number plus 3

Determined by using a test engine

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of liquid petrofuels, momentary combustion is observed at its

Flame temperature

Flash point

Fire point

Preheating temperature corresponding to viscosity of 25 centistokes

TRUE ANSWER : ?
YOUR ANSWER : ?

Presence of sulphur in gasoline

Leads to corrosion

Increases lead susceptibility

Helps during stabilisation

Decreases gum formation

TRUE ANSWER : ?
YOUR ANSWER : ?

Liquefied Petroleum Gas (LPG) in domestic use cylinders is in the liquid form. The density of LPG in liquid form is about __________ of that of water (i.e. 1 gm/c.c).

One third

One fourth

Half

One eighth

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has the highest octane number?

I-paraffins

Naphthenes

Olefins

Aromatics

TRUE ANSWER : ?
YOUR ANSWER : ?

Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.

Either more or less; depends on the room temperature

More than

Less than

Same as

TRUE ANSWER : ?
YOUR ANSWER : ?

Crude oil is subjected to vacuum distillation in the last stage, because

Lighter/low boiling products are prone to thermal decomposition

High boiling point products like heavy fuel oil & lubricating oils are heat sensitive and may decompose

None of these

High purity products can be obtained thereby

TRUE ANSWER : ?
YOUR ANSWER : ?