Mechanical Engineering: Metallurgy Online Test

The iron ore mostly used for the production of pig iron is
Hematite
Siderite
Limonite
Magnetite
Which amongst the following is not the iron ore used in the production of pig iron?
Hematite
Magnetite
Sphalerite
Siderite
The product from blast furnace is called
Cast iron
Wrought iron
Pig iron
Steel
Pig iron may be basic or acidic depending upon its
Sulphur
Phosphorus
Silicon
Slag content
The lime stone is added in blast furnace to flux
Carbon
Sulphur
Silicon oxide
Magnesium oxide
The slag from the blast furnace consists of
Calcium and ferrous silicates
Aluminium and ferrous silicates
Calcium and aluminium
Calcium, aluminium and ferrous silicates
The cupola is used to make
Pig iron
Cast iron
Wrought iron
Steel
The percentage of carbon in cast iron usually varies between
0.1 to 0.2%
0.5 to 1.0%
1.0 to 1.5%
2.5 to 3.5%
Cast iron is
Tough
Wear resistant
Ductile
Resilient
Presence of sulphur imparts the following characteristic/ characteristics to cast iron_______
Hardness and brittleness
Malleability
Softness and easy mach inability
Fluidity
Silicon in cast iron________
Makes the castings unsound
Promotes the formation graphite
Aids fusibility and fluidity
Makes the iron soft and easily mach-in-able
For wire drawing operation, the work material should be
Ductile
Tough
Malleable
Resilient
Pick up the material with highest ductility
Lead
Gold
Copper
Tin
Malleability of a material helps it
To be cold worked
To withstand deformation under shear
To withstand compression stresses
To undergo permanent deformation under compression
Hardness of a material represents its resistance to
Machining
Wear
Scratching
Local penetration
Any of the above
Identify the hardest metal_______
Iron
Platinum
Tungsten
Diamond
Iron has the unique characteristic of being
Dielectric
Paramagnetic
Ferromagnetic
Ferro electric
Description:

paper has 17 questions try to make a fast attempt, but make sure that your attempt is right.

Discussion

Ramakrishna Behera

Is Blast furnace slag PH completely depends on Phosphorous content ?
Si is majour impurity by which slag is basic / acidic ?

1685 days 13 hours 11 minutes ago

Hemant Kumar Chawla

diamond is not a metal...

2343 days 12 hours ago

Jim Farrington

Controlled sulfur is added to increase machinability.

2643 days 7 hours 23 minutes ago

Jim Farrington

Silicon forms carbides on the outside of sand castings, very difficult to machine.

2643 days 7 hours 27 minutes ago

Jim Farrington

Allotropic crystal structure of carbon is not a metal. Periodic element chart considers it a non-metal. Tungsten therefore is the hardest metal.

2643 days 7 hours 29 minutes ago

madhan mohan

good

4171 days 15 hours 47 minutes ago

raghava

can u pls xplain me how diamond is metal?

4317 days 19 hours 13 minutes ago

Kalyan Sarkar
Psychological interventions in Mathematics Study
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