Related Questions

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
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
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
__________ iron is produced by the annealing of white cast iron.
A Malleable
B Nodular
C Ductile
D Grey
Annealing ofwhite cast iron produces __________ iron.
A Grey
B Nodular
C Malleable
D Spheroidal
If a building "b' feet high casts a shadow 'f' feet long , then , at the same time of day, a tree 't' feet high will cast will cast a shadow how many feet long?
A (ft)/b
B (fb)/t
C b/(ft)
D (fb)/f

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