Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

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31.
Water-tube boiler is the one, in which

A. Water passes through tubes and flue gases around it

B. Tube carrying hot flue gases are immersed in a pool of water

C. Tubes are placed in vertical position

D. None of these

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32.
The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.

A. Two

B. Four

C. Six

D. Eight

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33.
Resilience of a bolt can be increased by increasing its

A. Length

B. Shank diameter

C. Head diameter

D. None of these

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34.
The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.

A. Isotactic

B. Saturation

C. Inversion

D. Throttling

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35.
Unit molar solution of __________ is the best conductor of electricity.

A. Sodium chloride

B. Acetic acid

C. Sulphuric acid

D. Sucrose

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36.
Lead is poured into the joint between two- __________ pipes.

A. Mild steel

B. Concrete

C. Cast iron

D. Asbestos cement

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37.
The hardenability of steel decreases with

A. Decrease in dislocation density

B. Increase in solutionising temperature

C. Increase in strength

D. Decrease in grain size

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38.
Which of the following phenomenon will exhibit the minimum heat transfer?

A. Boiling

B. Forced convection in air

C. Free convection in air

D. Conduction in air

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39.
__________ are normally subjected to sub-zero treatment.

A. Highly stressed parts

B. Gauges or precision parts

C. Cold rolled sheets

D. Non machinable materials

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40.
Blast furnace is a

A. Counter current reactor

B. Co-current reactor

C. Cross-current reactor

D. Combination of all the three

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

31. Water-tube boiler is the one, in which

Answer & Solution

32. The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.

Answer & Solution

33. Resilience of a bolt can be increased by increasing its

Answer & Solution

34. The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.

Answer & Solution

35. Unit molar solution of __________ is the best conductor of electricity.

Answer & Solution

36. Lead is poured into the joint between two- __________ pipes.

Answer & Solution

37. The hardenability of steel decreases with

Answer & Solution

38. Which of the following phenomenon will exhibit the minimum heat transfer?

Answer & Solution

39. __________ are normally subjected to sub-zero treatment.

Answer & Solution

40. Blast furnace is a

Answer & Solution

Read More Section(Chemical Engineering Basics)

31.
Water-tube boiler is the one, in which

32.
The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.

33.
Resilience of a bolt can be increased by increasing its

34.
The temperature at which a gas, when subjected to Joule-Thomson expansion, neither cools or heats up, is termed as the __________ temperature. Above this temperature the gas heats up on throttling and below this the gas cools down.

35.
Unit molar solution of __________ is the best conductor of electricity.

36.
Lead is poured into the joint between two- __________ pipes.

37.
The hardenability of steel decreases with

38.
Which of the following phenomenon will exhibit the minimum heat transfer?

39.
__________ are normally subjected to sub-zero treatment.

40.
Blast furnace is a