METALS MCQ- ITI Fitter Trade Theory
1) Which one of the following range of carbon content is present in pig iron?
5 points
0.05 to 1.4%
0.9 to 1.4%
1.7 to 2.2%
3 to 5%
Correct Answer- (D)
2) Which one of the following is an alloy of iron and carbon?
Pig iron
Cast iron
Wrought iron
Steel
Correct Answer- (D)
3) The main product of puddling furnace is
Cast iron
Wrought iron
Cold rolled steel
Hot rolled steel
Correct Answer- (B)
4) Pig iron is product of
Cuploa furnace
Blast furnace
Open hearth furnace
Electric arc furnace
Correct Answer- (B)
5) Which one the following processes can produce high alloy steel with accurately specified chemical composition?
Bessemer process
Open hearth furnace
Electric arc process
Crucible process
Correct Answer- (C)
6) A black malleable cast iron
Is a raw casting
Can be worked with hard cutting tools
Which through malleablizing and is decarburized at the outer skin
Is steel cast in moulds.
Correct Answer- (A)
7) Which one of the following elements, influences most of the forgeability of steel?
Silicon
Manganese
Carbon
Nitrogen
Correct Answer- (C)
8) In case of steel, through which one of the following processes, there will be no increase in hardness?
Heating above 600°C and slow cooling
Rolling
Hammering
Alloying with chromium
Correct Answer- (A)
9) Grey cast iron has
High compressive strength
Low compressive strength
High tensile strength
Low tensile strength
Correct Answer- (A)
10) Main alloying element in H.S.S. is
Tungsten
Chromium
Vanadium
Nickel
Correct Answer- (A)
11) Carbon percentage in HSS tool is
O.75 to 1.OO%
1.OO to 2.OO%
0.60 to 0.75%
0.20 to 0.30%
Correct Answer- (A)
12) The commonly used proportions of alloying elements in HSS are
18% tungsten, 4% chromium and 1% vanadium
18% chromium, 4% tungsten and 1% vanadium
18% vanadium, 4% chromium and 1% tungsten
18% cobalt, 4% chromium and 1% vanadium
Correct Answer- (A)
13) Grey cast iron is
Malleable
Ductile
Tensile
Rigid
Correct Answer- (D)
14) Which one of the following metals has less carbon content?
Plain carbon steel
Wrought iron
Pig iron
Cast iron
Correct Answer- (B)
15) A brass shaft is to be finish turned to a surface roughness Ra = 0.8, with high cutting speed. Which one of t a following cutting tool materials is suitable for this purpose?
H.S.S.
High carbon steel
Low alloy steel
Cemented carbide
Correct Answer- (D)
16) A solid forged boring tool is made of
H.S.S.
Tungsten carbide
Stellite
Cast iron
Correct Answer- (A)
17) Solid milling cutters are manufactured from
Sintered carbide
H.S.S.
Ceramic
Stellite
