MCQ - Mechanical TNPSC JTO
JTO - 436 - Fitter - 436 - Unit VIII Metals Metal Non Metal

151)   

Which of the following metals is most suitable for making electric wires?

A.
B.
C.
D.
Answer: B
152)   

Aluminium is often alloyed with copper, magnesium, and manganese to form ______.

A.
B.
C.
D.
Answer: A
153)   

The protective oxide film that forms naturally on aluminium is ______.

A.
B.
C.
D.
Answer: B
154)   

Lead is not suitable for structural applications because it is ______.

A.
B.
C.
D.
Answer: C
155)   

Which non-ferrous metal has the highest density?

A.
B.
C.
D.
Answer: D
156)   

White metal used for bearings generally contains ______.

A.
B.
C.
D.
Answer: A
157)   

Tin is commonly used in the production of ______.

A.
B.
C.
D.
Answer: B
158)   

Which of the following alloys contains zinc as the major alloying element?

A.
B.
C.
D.
Answer: B
159)   

Brass is commonly used for making ______.

A.
B.
C.
D.
Answer: B
160)   

Bronze is harder and stronger than pure copper because it contains ______.

A.
B.
C.
D.
Answer: C
161)   

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

A.
B.
C.
D.
Answer: A
162)   

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

A.
B.
C.
D.
Answer: B
163)   

The melting point of copper is about ______ °C.

A.
B.
C.
D.
Answer: B
164)   

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

A.
B.
C.
D.
Answer: B
165)   

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

A.
B.
C.
D.
Answer: B
166)   

Bell metal is an alloy of ______.

A.
B.
C.
D.
Answer: B
167)   

Which alloy is used for making marine propellers?

A.
B.
C.
D.
Answer: C
168)   

The addition of nickel to copper forms ______.

A.
B.
C.
D.
Answer: A
169)   

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

A.
B.
C.
D.
Answer: C
170)   

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

A.
B.
C.
D.
Answer: A
171)   

Heat treatment of steels is done to mainly improve ______.

A.
B.
C.
D.
Answer: C
172)   

The structure of plain carbon steel mainly depends upon ______.

A.
B.
C.
D.
Answer: B
173)   

Pearlite in steel is a mixture of ______.

A.
B.
C.
D.
Answer: A
174)   

Which structure gives steel maximum hardness?

A.
B.
C.
D.
Answer: C
175)   

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

A.
B.
C.
D.
Answer: B