Chemical Engineering Basics - Study Mode

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[#1146] Out of the following, the joint produced by __________ has the lowest strength.

(A) Soldering

(B) Welding

(C) Brazing

(D) Rivetting

Correct Answer

(A) Soldering

[#1147] Corrosion rate can not be lowered by reducing the __________ of the corroding medium.

(A) Concentration

(B) Velocity

(C) Temperature

(D) None of these

Correct Answer

(A) Concentration

[#1148] 1% concentration of water vapor in air is equivalent to __________ ppm (parts per million).

(A) 10000

(B) 1000

(C) 100

(D) 10

Correct Answer

(A) 10000

[#1149] Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.

(A) Vicker's

(B) Rockwell

(C) Knoop

(D) Brinell

Correct Answer

(B) Rockwell

[#1150] Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

(A) Forging

(B) Cold rolling

(C) Hot rolling

(D) Casting

Correct Answer

(B) Cold rolling