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chemical engineering chemical engineering basics MCQs

Practise multiple-choice questions from chemical engineering chemical engineering basics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical engineering basics Mcqs

1. With increase in steam pressure, its specific volume decreases ____________________?
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A. Slowly first and then rapidly

B. Rapidly first and then slowly

C. Exponentially

D. Linearly

2. Lead is poured into the joint between two _______________ pipes ?
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A. Cast iron

B. Concrete

C. Mild steel

D. Asbestos cement

3. _______________ is the trade name assigned to a non-ferrous cast alloy composed of cobalt, chromium & tungsten ?
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A. Stellite

B. Cermet

C. Alnico

D. High speed steel

4. Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are ?
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A. Cobalt, chromium & tungsten

B. Cobalt, zirconium & molybdenum

C. Cobalt, chromium & nickel

D. Molybdenum, tungsten & chromium

5. Specific gravity of a metal, which weighs 5 kg in air and 4 kg when submerged in water, will be_____________________?
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A. 3.75

B. 2.5

C. 1.25

D. 5

6. Maximum permissible sulphur content in steel is ______________ percent ?
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A. 0.505

B. 0.055

C. 0.805

D. 0.015

7. In practice, the compression ratio of compression-ignition (CI) engine ranges from ______________________?
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A. 15 to 25

B. 40 to 55

C. 60 to 70

D. 5 to 10

8. The refrigerant freon-12 is chemically_______________________?
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A. CCl3F

B. CCl2F2

C. CCl4F

D. CClF3

9. Property responsible for the talcum powder to cling to the skin is the__________________?
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A. Adhesion

B. Capillary action

C. Cohesion

D. Surface tension

10. A cylindrical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poissons ratio of the rod is___________________?
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A. 0.25

B. 0.33

C. 0.44

D. 0

11. A pycnometer is used for the measurement of________________________?
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A. Concentration of a solution

B. Composition of alloys

C. Flow rate of molten metal

D. Specific gravity of a liquid

12. When the wavelength of incident X-rays increases, the angle of diffraction__________________?
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A. Remain constant

B. Decreases

C. Shows no systematic variation

D. Increases

13. Which of the following has the least value of ultimate tensile strength (UTS) ?
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A. Cast iron

B. High carbon steel

C. Wrought iron

D. Medium carbon steel

14. Which of the following is the most wear resistant grade of carbide used for the cutting tools ?
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A. Nickel carbide

B. Tungsten carbide

C. Aluminium carbide

D. Iron carbide

15. Chlorine acts as a bleaching agent only in the presence of ______________________?
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A. Moisture

B. Pure oxygen

C. Dry air

D. Sunlight

16. Which of the following is prone to cup and cone fracture ?
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A. Cast iron

B. Soft brass

C. Round specimen of ductile metal

D. Flat tensile specimen of ductile metal

17. Which of the following is not an ore of copper ?
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A. Cryolite

B. Azurite

C. Chalcopyrite

D. Malachite

18. Uniform ramming of sand in green sand moulding process leads to____________________?
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A. Less sand expansion type of casting defect

B. Reduced chance of gas porosity

C. Greater dimensional stability of the casting

D. Uniform flow of molten metal into the mould cavity

19. Which of the, following is not associated with the functioning of a petrol engine ?
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A. Carburettor

B. Compression ignition system

C. Otto cycle

D. Spark plug

20. The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?
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A. Acid and weak base

B. Base and strong acid

C. Base and weak acid

D. None of these

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