Sparks Academy
SPARKS ACADEMY
Online Test Series
8190879379 Chennai

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

26)   

 Bronze is an alloy of:

A.
B.
C.
D.
Answer: B
27)   

 A key property of tin is:

A.
B.
C.
D.
Answer: C
28)   

 The density of copper is about:

A.
B.
C.
D.
Answer: B
29)   

The main ore of copper is:

A.
B.
C.
D.
Answer: B
30)   

Copper is widely used in electrical applications because:

A.
B.
C.
D.
Answer: B
31)   

Brass is an alloy of:

A.
B.
C.
D.
Answer: B
32)   

The main ore of zinc is:

A.
B.
C.
D.
Answer: A
33)   

The primary use of zinc is:

A.
B.
C.
D.
Answer: B
34)   

 Zinc is used in making brass because it:

A.
B.
C.
D.
Answer: A
35)   

The density of zinc is about:

A.
B.
C.
D.
Answer: B
36)   

The main constituents of steel microstructure are:

A.
B.
C.
D.
Answer: D
37)   

Pearlite is a mixture of:

A.
B.
C.
D.
Answer: B
38)   

The main purpose of annealing is to:

A.
B.
C.
D.
Answer: B
39)   

In full annealing, steel is heated:

A.
B.
C.
D.
Answer: A
40)   

 Cladding is the process of:

A.
B.
C.
D.
Answer: B
41)   

The main difference between normalizing and annealing is:

A.
B.
C.
D.
Answer: B
42)   

Normalizing produces:

A.
B.
C.
D.
Answer: B
43)   

Hardening of steel is achieved by:

A.
B.
C.
D.
Answer: B
44)   

The structure obtained after hardening is:

A.
B.
C.
D.
Answer: B
45)   

Tempering is carried out after hardening mainly to:

A.
B.
C.
D.
Answer: B
46)   

During tempering, steel is heated:

A.
B.
C.
D.
Answer: A
47)   

31.    Which of the following is not a method of surface hardening?

A.
B.
C.
D.
Answer: C
48)   

Which of the following metals naturally forms a protective oxide film that resists corrosion?

A.
B.
C.
D.
Answer: A
49)   

Galvanizing is a process of coating iron or steel with:

A.
B.
C.
D.
Answer: B
50)   

 In electroplating, the article to be plated is connected to the:

A.
B.
C.
D.
Answer: B