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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 22
1.
Pick out the wrong statement:
Soft water is more corrosive than that carrying calcium salts.
The corrosion of brass condenser tubes handling brine solution is also termed as 'dezincification'.
Non-annealed brass is highly susceptible to season cracking (i.e., inter-crystal corrosion due to internal stresses).
Pure copper is highly susceptible to stress corrosion.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The tensile strength of plastics ranges from __________ kg/mm2.
10 to 50
50 to 100
0.01 to 0.1
0.1 to 10
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Ceramic tips for the cutting tool are prepared from __________ powder.
carbon
silicon carbide
aluminium oxide
tungsten
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Grain hardness is measured by the __________ hardness testing method.
Knoop
Rockwell F
Shore sceleroscope
Vicker's
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.
40
80
10
25
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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