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MCQ - TNPSC JTO

JTO - 436 - Fitter

436 - Unit VIII Metals Metal Non Metal

161)   

The chief use of zinc is in the form of ______.

A.
B.
C.
D.
162)   

Aluminium is used for making overhead transmission lines because it is ______.

A.
B.
C.
D.
163)   

The melting point of copper is about ______ °C.

A.
B.
C.
D.
164)   

Lead pipes were used in old plumbing systems, but discontinued mainly because of ______.

A.
B.
C.
D.
165)   

Aluminium is used in food packaging industries in the form of ______.

A.
B.
C.
D.
166)   

Bell metal is an alloy of ______.

A.
B.
C.
D.
167)   

Which alloy is used for making marine propellers?

A.
B.
C.
D.
168)   

The addition of nickel to copper forms ______.

A.
B.
C.
D.
169)   

Which non-ferrous metal is highly resistant to atmospheric corrosion?

A.
B.
C.
D.
170)   

The common use of lead-acid batteries is in ______.

A.
B.
C.
D.
171)   

Heat treatment of steels is done to mainly improve ______.

A.
B.
C.
D.
172)   

The structure of plain carbon steel mainly depends upon ______.

A.
B.
C.
D.
173)   

Pearlite in steel is a mixture of ______.

A.
B.
C.
D.
174)   

Which structure gives steel maximum hardness?

A.
B.
C.
D.
175)   

Annealing of steel is carried out by heating and cooling ______.

A.
B.
C.
D.
176)   

The main purpose of annealing is to ______.

A.
B.
C.
D.