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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit VI Gas Cylinders and Regulators

26)   

Acetylene cylinder color code is:

A.
B.
C.
D.
Answer: A
27)   

LPG cylinder color is:

A.
B.
C.
D.
Answer: A
28)   

Argon gas cylinder color is:

A.
B.
C.
D.
Answer: A
29)   

Hydrogen gas cylinder color is:

A.
B.
C.
D.
Answer: A
30)   

Nitrogen gas cylinder color is:

A.
B.
C.
D.
Answer: A
31)   

Oxygen cylinders should be stored:

A.
B.
C.
D.
Answer: B
32)   

Acetylene should not be used at a pressure above:

A.
B.
C.
D.
Answer: A
33)   

Before fitting a regulator to a cylinder, the valve should be:

A.
B.
C.
D.
Answer: A
34)   

Acetylene cylinders must be kept:

A.
B.
C.
D.
Answer: A
35)   

If a gas leak is suspected, the safest way to check is by:

A.
B.
C.
D.
Answer: B
36)   

In oxy-acetylene welding, the oxygen-to-acetylene ratio for neutral flame is:

A.
B.
C.
D.
Answer: A
37)   

The hottest part of an oxy-acetylene flame is:

A.
B.
C.
D.
Answer: B
38)   

Carburizing flame has:

A.
B.
C.
D.
Answer: B
39)   

Oxidizing flame is suitable for welding:

A.
B.
C.
D.
Answer: B
40)   

Neutral flame is used for:

A.
B.
C.
D.
Answer: A
41)   

Acetylene gas is stored in acetone because:

A.
B.
C.
D.
Answer: A
42)   

The regulator for oxygen is colored:

A.
B.
C.
D.
Answer: A
43)   

The regulator for acetylene is colored:

A.
B.
C.
D.
Answer: A
44)   

In oxy-acetylene cutting, oxygen is used for:

A.
B.
C.
D.
Answer: B
45)   

Oxygen is heavier than air. True or False?

A.
B.
C.
D.
Answer: A
46)   

The bursting disc in a cylinder is provided for:

A.
B.
C.
D.
Answer: B
47)   

The safety valve in acetylene cylinder is located at:

A.
B.
C.
D.
Answer: B
48)   

The fuse plugs in acetylene cylinders melt at about

A.
B.
C.
D.
Answer: A
49)   

Oil or grease must not be applied to oxygen fittings because:

A.
B.
C.
D.
Answer: B
50)   

Oxygen cylinder valves should be opened:

A.
B.
C.
D.
Answer: A