Related Questions

The heat treatment process used for softening hardened steel is
A Carburising
B Normalizing
C Annealing
D Tempering
It is no secret that prison can be rather ———,; grim conditions and severe treatment have been known to —— even the most hardened criminals.-
A cruel ——— entertain
B harsh —— dishearten
C pleasant — encourage
D strange —— prevent
The ability of a material to resist softening at high temperature is known as
A Creep
B Hot tempering
C Hot hardness
D Fatigue
A material is capable of resisting softening at high temperature, because of its property termed as
A Hot temper
B Hot hardness
C Fatigue
D Creep
Which one of the following is used for water softening?
A Mg(HCO3)2
B Na3PO4
C Na6P6O18
D Na2HPO4
Zeolite used in water softening process (cation exchange) is regenerated by washing with
A Brine
B Chloramines
C Sodium bisulphite
D Liquid chlorines
Which of the following heat treatment processes is usually applied to castings ?
A Tempering
B Annealing
C Normalising
D Carburising
Steel will respond to hardening by heat treatment processes, only when the minimum carbon content in it is __________ percent.
A 0.02
B 0.2
C 0.35
D 0.5
The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
A Less than 0.1 percent
B Less than 0.3 percent
C More than 0.3 percent
D Anywhere between 0.1 to 1 percent
In vulcanisation process, rubber can be hardened by adding
A Nitrogen
B Silicon
C Sulphur
D Alcohol

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