Chemical Engineering Basics MCQ Questions & Answers

81

The noble metals

A) Are exemplified by Na, K and Li B) Do not resist corrosion very strongly C) Are the lowermost in the electro-chemical series of metals D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

82

Filler material used in welding should have __________ as compared to the parent metal to be welded.

A) Lower melting temperature B) Same melting temperature C) Same composition D) Both B & C

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

83

The leaching solvent used in Baeyer's process for the purification of bauxite is

A) Ammonium hydroxide B) Sodium carbonate C) Sodium hydroxide D) Ammonium carbonate

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

84

The unit of g_c is

A) lb_m/lb_f . ft/seC₂ B) lb_f/lb_m . ft/seC₂ C) lb_m/lb_f . seC₂/ft D) lb_f/lb_m . seC₂/ft

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

85

A thermally thin body is the one for which

A) Biot number is less than 0.1 B) Gallileo number is less than 0.1 C) Fourier number is less than 0.1 D) Fourier number is greater than 0.1

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

86

Euler number is defined as the ratio of inertia force to __________ force.

A) Pressure B) Elastic C) Gravity D) Viscous

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

87

Existence of velocity potential implies that the fluid is

A) Irrotational B) Ideal C) Compressible D) In continuum

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

88

The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the

A) Resilience B) Toughness C) Ductility D) Impact strength

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

89

Pick out the wrong statement.

A) Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties B) Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyniding, carburising, nitriding etc. C) Induction hardening and flame hardening techniques are also used for surface hardening D) Martempering of a material is a hardening process

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

90

Preheating before welding is done to

A) Make the plate softer B) Burn oil & grease sticking to plate surfaces C) Avoid plate distortion D) Prevent cold cracks

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering