Online Quiz for Chemical Engineering - Set 04 - ObjectiveBooks

Online Quiz for Chemical Engineering - Set 04


1. The hydraulic radius of a circular pipe of diameter 'd' flowing full is
d/4
d/2
2d/3
d/3

2. The leg of a barometric leg pump is longer than the Toricellian leg, which is about __________ meters.
1
5
34
10

3. Temperature of hot gases flowing in a pipe is measured by a thermocouple inserted in the thermal well. The thermal well made of __________ will facilitate the most accurate measurement of the temperature.
Copper
Steel
Aluminium
Brass

4. Steel balls are manufactured by cold heading. After cold forming, they are subjected to
Tempering
Normalising
Stress-relieving
Artificial ageing

5. Surface tension is due to the __________ forces.
Viscous
Adhesive
Cohesive
Difference between adhesive and cohesive

6. Pig iron is
Made from cast iron
Made from wrought iron
The one, which comes out of the blast furnace
Free from impurities

7. For the same heat input & compression ratio, efficiency of Otto cycle is higher than that of diesel cycle, because in Otto cycle.
Heat rejection is lower
Expansion and compression are isentropic
Maximum temperature is higher
Combustion is at constant volume

8. Buoyancy force depends on the __________ the liquid.
Depth of immersion in
Displaced mass of
Surface tension of
Viscosity of

9. Usual value of the resistance suitable for a wire resistance strain gauge is __________ ohms.
20
80
120
300

10. When metals are heated to high temperature, their __________ increases in general.
Atomic vibration
Creep strength
Yield stress and ultimate tensile strength
Toughness and stiffness

11. Which of the following will resist maxi-mum shock and vibration without cracking?
Grey cast iron
White cast iron
Malleable iron
Graphite

12. In __________ process, ions of salts react with water to produce acidity or alkalinity.
Hydration
Hydrolysis
Electrolysis
Dialysis

13. Which of the following is a weak acid?
HF
HCl
HI
HBr

14. The quantity of electricity required to deposit one gm equivalent of any substance is one
Ampere
Coulomb
Microfarad
Faraday

15. If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis?
7
< 7
> 7
0

16. __________ method of depreciation calculation ensures that the interest is charged on the cost of machine asset every year on the book value, but the rate of depreciation remains constant every year.
Annuity charging
Straight line
Sinking fund
None of these

17. __________ cannot be forged.
High speed/carbon steel
Cast iron
Wrought iron
Mild steel

18. Hypo (sodium thiosulphate) because of its complex forming behaviour is used in photography to remove undecomposed silver bromide as a soluble complex for __________ of the picture.
Printing
Developing
Color
Fixation

19. Stoneware pipes used for sewers for carrying sewage normally is joined by __________ joint.
Spigot and socket
Flanged iron
Collar
Expansion

20. Which of the following is the terminology used for the temperature at which the phase changes occur in a metal?
Critical temperature
Recrystallization temperature
Phase transformation temperature
Transition temperature

     Score =

Correct answers:

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