Chemical Engineering Basics Mcqs

This set of Engineering Multiple Choice Questions & Answers (MCQs) focuses on “ Chemical Engineering Basics ”. These Mcqs are chosen from a collection of most authoritative and best reference books on Chemical Engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Chemical Engineering Basics comprehensively.

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1.
Which of the following is an ore dressing operation ?

Classification

Smelting

Roasting

None of these

2.
Shampoos are commercially not available in the form of ___________________?

Powder

Gaseous mixture

Solution

Emulsion

3.
In multipass welds, shot peening is done after each pass to__________________?

Close the surface porosity

Break the continuity of columnar grains

Flatten the weldment

Introduce texture in the weld

4.
Pick out the correct combination about the role of various additives used in polymers ?

Plasticiser: increases the polymer strength

Heat stabiliser: increases the maximum service temperature

Fillers: Does not affect the property of polymer but increases its weight

Lubricants: increases the flexibility of polymers

5.
Which of the following is not used as a bearing material ?

Copper-lead alloys

Babbitts

Bronzes

Cermets

6.
The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?

Lead

Copper

Aluminium

Wrought iron

7.
Oxide layer formed on the non-ferrous metal surface after its annealing is__________________?

Removed by acid pickling

Hammered into the surface

Removed with coarse emery cloth

Left as such to protect the surface

8.
Case hardening is not done by________________?

Nitriding

Hot dipping

Electroplating

Both ‘B’ & ‘C’

9.
Upto the critical radius of insulation, added insulation, will____________________?

Increase the heat loss

Decrease heat loss and will have no effect beyond that

Decrease heat flux

Reduce convection heat loss compared to conduction heat less

10.
Chlorine acts as a bleaching agent only in the presence of ______________________?

Dry air

Pure oxygen

Moisture

Sunlight

11.
Powder metallurgy technique is used in the production of ____________________ tools ?

Tungsten carbide

High carbon steel

High speed steel

Drilling

12.
Rain drops falling through atmospheric air attain limited terminal velocity, because of ____________________?

Upward thrust due to air

Viscous force exerted by air

Surface tension effects of water

Force of gravity

13.
Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

1.5

3

5

7

14.
Colour comparator is used to measure the___________________?

PH value

Electrode potential

Colour intensity

None of these

15.
A reduction in thermal resistance during heat transfer does not occur in the___________________?

Convection heat transfer by stirring the fluid and cleaning the heating surface

Conduction heat transfer by reduction in the material thickness and increase in the thermal

Ductivity

Radiation heat transfer by increasing the temperature and reducing the emissivity

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