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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 14
36.
In cold working of metal as compared to its hot working
cracks and blow holes are eliminated.
ductility and impact strength improves.
appreciable strain hardening is produced.
yield stress, hardness and fatigue strength is not at all affected.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
__________ is the process used for setting up compressive stresses in the surface of a metal to improve its fatigue strength.
Lancing
Shot peening
Slugging
Spinning
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Mho's scale of hardness, which consists of 10 standard minerals is used for the measurement of __________ hardness.
scratch
indentation
dynamic
rebound
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
Which of the following is a weak acid ?
HF
HCl
HI
HBr
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Pig iron is a product of
electric arc furnace
cupola
blast furnace
open hearth furnace
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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