Related Questions

When carbon in the cast iron is principally in the form of graphite, the cast iron will be of
A Brown colour
B Yellow colour
C White colour
D Grey colour
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.
A Cementite
B Free graphite
C Both A and B
D None of these
White cast iron as compared to grey cast iron is
A More durable
B Very brittle
C Very hard
D All of the above
Nodular cast iron is produced by adding ________ to the molten cast iron.
A Nickel
B Chromium
C Copper
D Magnesium
An important property of malleable cast iron in comparison to grey cast iron is the high
A Compressive strength
B Ductility
C Carbon content
D Hardness
__________ of grey cast iron produces white cast iron.
A Tempering
B Rapid heating
C Rapid cooling
D Slow cooling
Addition of small amount of __________ to grey cast iron is done to produce nodular grey cast iron.
A Manganese
B Phosphorous
C Magnesium
D Chromium
The percentage of carbon in cast iron is :
A 0.01 to 0.25
B 0.5 to 1.5
C 6 to 8
D 3 to 5
The percentage of carbon in cast iron varies from
A 0.1 to 0.5
B 0.5 to 1
C 1 to 1.7
D 1.7 to 4.5
The percentage of carbon in gray cast iron is in the range of
A 0.25 to 0.75 percent
B 1.25 to 1.75 percent
C 3 to 4 percent
D 8 to 10 percent

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