Related Questions

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 most distinguished property of malleable cast iron is its high
A Ductility
B Hardness
C Malleability
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
__________ of grey cast iron produces white cast iron.
A Tempering
B Rapid heating
C Rapid cooling
D Slow cooling
Malleable cast iron
A Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
B Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
C Is produced by annealing process. It is soft, tough and easily machined metal
D Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material
Malleable cast iron is produced
A By adding magnesium to molten cast iron
B By quick cooling of molten cast iron
C From white cast iron by annealing process
D None of these
There are five persons sitting on a bench. Blue eyed lady sitting in the middle is my mother. At the extreme left, the man with grey hair is my maternal uncle. Lady sitting at the extreme right is having a pimple on her nose and is the wife of person who is sitting between blue eyed lady and grey haired man and has a pointed nose. A lady having marks on her face is the younger sister of the blue eyed lady and sitting on the remaining fifth place. The person having a pointed nose is the son of the blue eyed lady. What is the lady having marks on her face to the man sitting at extreme left ?
A Wife
B Maternal Aunt
C Sister
D Sister-in-law
Carbon is present in the form of __________ in grey cast iron.
A Spheroids
B Nodular aggregates of graphite
C Flakes
D Cementite
Compressive strength of grey cast iron in tonnes/cm is of the order of
A 35
B 57
C 710
D 1015
Grey cast iron has
A Carbon in the form of free graphite
B High tensile strength
C Low compressive strength
D All of these

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