Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering Page-5 section-4

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41.
A freely floating object is stable, if its centre of buoyancy

A. Coincides with its centre of gravity

B. Lies below its centre of gravity

C. Lies below its metacentre

D. None of these

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42.
__________ welding will be the most suitable for butt welding two 20 cms thick boiler drum mild steel plates.

A. Electrical resistance

B. Electroslag

C. Plasma torch

D. Submerged arc

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43.
An atom bomb works on the principle of

A. Nuclear fission

B. Nuclear fusion

C. Both the nuclear fission & fusion

D. Ionisation

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44.
Damage to metal surface by mechanical action is called

A. Pitting

B. Corrosion

C. Erosion

D. None of these

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45.
Screws are specified by their __________ diameters.

A. Minor

B. Major

C. Pitch

D. None of these

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46.
The following is a typical anionic collector used in flotation.

A. Ethyl dixanthogen

B. Trimethyl cetyl ammonium bromide

C. Potassium ethyl xanthate

D. LAuryl amine hydrochloride

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47.
With increase in compression ratio, the volumetric efficiency of air compressor

A. Increases

B. Decreases

C. Remains same

D. May increase or decrease (depends on the suction pressure)

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48.
The thickness of oxide film is y at time t. If K₁, K₂ and K₃ are the temperature dependent constants, the parabolic law of oxidation is given by

A. y² = 2K₁t + K₂

B. y = K₁ ln (K₂t + K₃)

C. y = K₁t + K₂

D. y = K₁t³ + K₂

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49.
What is the range of tempering temperature (°C) for most of the materials ?

A. 75-100

B. 200-300

C. 350-450

D. 500-600

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50.
Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.

A. Ideal

B. Uniform

C. Steady

D. None of these

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering

41. A freely floating object is stable, if its centre of buoyancy

Answer & Solution

42. __________ welding will be the most suitable for butt welding two 20 cms thick boiler drum mild steel plates.

Answer & Solution

43. An atom bomb works on the principle of

Answer & Solution

44. Damage to metal surface by mechanical action is called

Answer & Solution

45. Screws are specified by their __________ diameters.

Answer & Solution

46. The following is a typical anionic collector used in flotation.

Answer & Solution

47. With increase in compression ratio, the volumetric efficiency of air compressor

Answer & Solution

48. The thickness of oxide film is y at time t. If K1, K2 and K3 are the temperature dependent constants, the parabolic law of oxidation is given by

Answer & Solution

49. What is the range of tempering temperature (°C) for most of the materials ?

Answer & Solution

50. Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.

Answer & Solution

Read More Section(Chemical Engineering Basics)

41.
A freely floating object is stable, if its centre of buoyancy

42.
__________ welding will be the most suitable for butt welding two 20 cms thick boiler drum mild steel plates.

43.
An atom bomb works on the principle of

44.
Damage to metal surface by mechanical action is called

45.
Screws are specified by their __________ diameters.

46.
The following is a typical anionic collector used in flotation.

47.
With increase in compression ratio, the volumetric efficiency of air compressor

48.
The thickness of oxide film is y at time t. If K₁, K₂ and K₃ are the temperature dependent constants, the parabolic law of oxidation is given by

49.
What is the range of tempering temperature (°C) for most of the materials ?

50.
Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.