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

126)   

Which of the following processes is not used in steel making?

A.
B.
C.
D.
Answer: D
127)   

The Bessemer converter is lined with silica when the pig iron contains ______.

A.
B.
C.
D.
Answer: B
128)   

The Siemens-Martin process is another name for ______.

A.
B.
C.
D.
Answer: B
129)   

Which steel has the highest carbon content?

A.
B.
C.
D.
Answer: C
130)   

Alloy steels are obtained by adding elements like ______.

A.
B.
C.
D.
Answer: A
131)   

Non-ferrous metals are those which do not contain appreciable amount of ______.

A.
B.
C.
D.
Answer: A
132)   

The lightest engineering metal commonly used in industries is ______.

A.
B.
C.
D.
Answer: B
133)   

The specific gravity of aluminium is about ______.

A.
B.
C.
D.
Answer: A
134)   

Aluminium is widely used in aircraft industries mainly because it is ______.

A.
B.
C.
D.
Answer: C
135)   

Which of the following is not an alloy of aluminium?

A.
B.
C.
D.
Answer: C
136)   

Lead is mainly used for ______.

A.
B.
C.
D.
Answer: B
137)   

The melting point of lead is about ______ °C.

A.
B.
C.
D.
Answer: C
138)   

Which non-ferrous metal is most suitable for making solders?

A.
B.
C.
D.
Answer: C
139)   

Tin is used for coating steel sheets mainly to ______.

A.
B.
C.
D.
Answer: C
140)   

Bronze is an alloy of ______.

A.
B.
C.
D.
Answer: B
141)   

The electrical conductivity of copper is about ______% of pure silver.

A.
B.
C.
D.
Answer: D
142)   

The main ore of copper is ______.

A.
B.
C.
D.
Answer: C
143)   

Which of the following is a copper alloy?

A.
B.
C.
D.
Answer: D
144)   

Brass is an alloy of ______.

A.
B.
C.
D.
Answer: B
145)   

Zinc is mainly used for ______.

A.
B.
C.
D.
Answer: B
146)   

The specific gravity of zinc is about ______.

A.
B.
C.
D.
Answer: C
147)   

German silver is an alloy of ______.

A.
B.
C.
D.
Answer: B
148)   

Gunmetal is used for making ______.

A.
B.
C.
D.
Answer: B
149)   

Which non-ferrous metal is most suitable for making water pipes?

A.
B.
C.
D.
Answer: C
150)   

The bluish-green coating that forms on copper when exposed to atmosphere is ______.

A.
B.
C.
D.
Answer: C