Chemical Engineering - Chemical Engineering Basics

36.
Which of the following is not a cupro-nick-el alloy ?
German silver
Monel metal
Muntz metal
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
Electrochemical corrosion occurs
where the liquid electrolytes containing free ions are present.
only in alloys.
only in pure metals.
due to direct chemical action of metal with oxygen.
Answer: Option
Explanation:
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38.
The ability of tool steel to resist softening at high temperatures is termed as __________ hardness.
red
extended
super
extreme
Answer: Option
Explanation:
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39.
Improvement in mechanical properties of metals in its hot working is due to the grains
recrystallisation
refinement
growth
recovery
Answer: Option
Explanation:
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40.
Young's modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
alloying additions
heat treatment
cold work
increasing temperature
Answer: Option
Explanation:
No answer description is available. Let's discuss.