Chemical Engineering Basics - Practice Test

[#376] In cold working of metal as compared to its hot working

(A) Cracks and blow holes are eliminated

(B) Ductility and impact strength improves

(C) Appreciable strain hardening is produced

(D) Yield stress, hardness and fatigue strength is not at all affected

Correct Answer

(D) Yield stress, hardness and fatigue strength is not at all affected

[#377] Cast iron has the unique property of high

(A) Ductility

(B) Damping characteristics

(C) Hardness

(D) Malleability

(E) Ductility

(F) Damping characteristics

(G) Hardness

(H) Malleability

Correct Answer

(B) Damping characteristics
(F) Damping characteristics

[#378] Which of the following is the terminology used for the temperature at which the phase changes occur in a metal ?

(A) Critical temperature

(B) Recrystallisation temperature

(C) Phase transformation temperature

(D) Transition temperature

Correct Answer

(A) Critical temperature

[#379] Ceramic tips for the cutting tool are prepared from __________ powder.

(A) Carbon

(B) Silicon carbide

(C) Aluminium oxide

(D) Tungsten

(E) Carbon

(F) Silicon carbide

(G) Aluminium oxide

(H) Tungsten

Correct Answer

(C) Aluminium oxide
(G) Aluminium oxide

[#380] Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when

(A) Cheap electricity is available

(B) The precious metal content of copper is high

(C) There is a demand for ultrapure (99.99%) electrolytic copper

(D) All of the above

Correct Answer

(D) All of the above

Chemical Engineering Basics - Study Mode

[#376] In cold working of metal as compared to its hot working

Correct Answer

[#377] Cast iron has the unique property of high

Correct Answer

[#378] Which of the following is the terminology used for the temperature at which the phase changes occur in a metal ?

Correct Answer

[#379] Ceramic tips for the cutting tool are prepared from __________ powder.

Correct Answer

[#380] Even minute presence of impurities in copper impairs its electrical conductivity seriously. Electrolytic refinning of blister copper is resorted to, when

Correct Answer