MCQ - TNPSC JTO
JTO - 436 - Fitter
436 - Unit VIII Metals Metal Non Metal
65)
Lead is unsuitable for structural purposes because:
A.
B.
C.
D.
66)
Lead is widely used for making:
A.
B.
C.
D.
67)
The melting point of lead is about:
A.
B.
C.
D.
68)
The phenomenon in which tin changes into a powdery form at low temperature is called:
A.
B.
C.
D.
69)
Pewter is an alloy mainly of:
A.
B.
C.
D.
70)
The melting point of tin is about:
A.
B.
C.
D.
71)
Which of the following is not a copper alloy?
A.
B.
C.
D.
72)
Monel metal contains:
A.
B.
C.
D.
73)
Copper develops a greenish coating on exposure to air, called:
A.
B.
C.
D.
74)
The melting point of zinc is about:
A.
B.
C.
D.
75)
German silver is an alloy of:
A.
B.
C.
D.
76)
Zinc is added to copper to make brass mainly for:
A.
B.
C.
D.
77)
Babbitt metal used for bearings contains:
A.
B.
C.
D.
78)
Alnico is an alloy containing:
A.
B.
C.
D.
79)
Constantan (used in thermocouples) is an alloy of:
A.
B.
C.
D.
80)
The lightest structural metal among the given is:
A.
B.
C.
D.