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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 4
16.
Steels with high carbon equivalent have poor weldability, because in these steels during welding
carbon and other alloying elements get oxidised from the weld pool.
excessive ferrite forms in the heat affected zone leading to poor toughness of the weld.
martensite forms in the heat affected zone leading to poor toughness/ductility of the weld.
segregation of carbon and other element occurs in the weld pool leading to poor properties of the weld.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
If the pH value of a solution of sodium chloride is 7; then what will be the pH value of the solution after its electrolysis ?
7
< 7
> 7
0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
Measurement of the area of the indented surface is not involved in the __________ hardhes testing method.
Vicker's
Rockwell
Knoop
Brinell
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means
disposing off a machine/property on as is where is basis.
disposing off machine/property, which is no longer useful in the present scenerio.
mortgaging the obsolete machine/property.
writing off the obsolete machine/ property.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Super conduction in metals is observed at a temperature of __________ °K.
<100
>100
about 273
about 373
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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