MCQ - TNPSC JTO
JTO - 540 - Trade - Workshop Calculation Science
540 Unit 2 Material Science and Heat Treatment
193)
Which heat treatment process increases the hardness of steel the most?
A.
B.
C.
D.
194)
Which non-ferrous metal is preferred for making electrical conductors?
A.
B.
C.
D.
195)
Cast iron contains carbon in the range of:
A.
B.
C.
D.
196)
The tempering temperature for hardened steel usually ranges between:
A.
B.
C.
D.
197)
Stainless steel gets its corrosion resistance primarily from:
A.
B.
C.
D.
198)
Which of the following is used as a timber preservative?
A.
B.
C.
D.
199)
Hardening of steel increases:
A.
B.
C.
D.
200)
Rubber has low thermal conductivity because:
A.
B.
C.
D.