WorksheetsBE 2025-26 PRT Module 3 Quiz
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Methods used for dehydration and desalting of crude
a)
Freezing and thawing for dehydration
b)
Reverse osmosis for desalting
c)
Chemical treatment for dehydration
d)
Electrical Desalting
2.
Temperature and pressure used for electrical desalting
a)
20-30 degrees Celsius and 0.1-0.5 MPa
b)
100-120 degrees Celsius and 5-7 MPa
c)
40-60 degrees Celsius and 0.5-1 MPa
d)
T= 90 º c and P = 5-6 Kg/cm2
3.
Why water is added in crude during desalting
a)
Water is added to dissolve and remove salts and impurities from crude oil.
b)
To increase the viscosity of crude oil.
c)
To cool down the crude oil during processing.
d)
To enhance the color of the crude oil.
4.
Types of tower arrangement
a)
Top tray reflux
b)
Pump around reflux
c)
floating towers
d)
cylindrical towers
5.
In ADU condenser pressure is
a)
The condenser pressure in an ADU is maintained at atmospheric pressure.
b)
The condenser pressure in an ADU is irrelevant to its operation.
c)
The condenser pressure in an ADU is always zero.
d)
Slightly more than ADU
6.
In VDU which type of plate used
a)
Ceramic plate
b)
Plastic plate
c)
Glass plate
d)
Plate gives less pressure drop
7.
Overhead corrosion takes place because
a)
Overhead corrosion occurs due to high temperatures.
b)
Sulfur and chloride component
c)
Overhead corrosion is caused by lack of sunlight.
d)
Overhead corrosion happens because of chemical reactions with metals.
8.
To avoid overhead corrosion chemicals used as
a)
rust preventers
b)
Ammonia
c)
metallic coatings
d)
oxidation reducers
9.
Blending process is
a)
A technique for separating materials into distinct layers.
b)
A process of heating materials to form a solid structure.
c)
Chemical process
d)
Physical process
10.
Suction blending used for
a)
storing food ingredients
b)
heating liquids for cooking
c)
slicing vegetables efficiently
d)
Toxic materials
100 %
