358. Grain size increases as temperature goes above A2 line. Do these grains decrease in size when steel is cooled toward the A3 line
A.Yes
B.No
C.Will decrease if cooled fast
D.Will increase if cooled fast

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359. The alloying element that could make steel austenite at room temperature are
A.Chromium and titanium
B.Carbon and sulphur
C.Nickel and manganese
D.Molybdenum and titanium

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360. The carbon content of the eutectoid with addition of alloying elements will
A.Increase
B.Decrease
C.Remain unaffected
D.Increase or decrease depending on the alloying element

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361. When observed unetched, the carbon in gray cast iron appears in the form of
A.Graphite
B.Cementite
C.Ferrite
D.Austenite

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362. Cementite in the form of lamellar pearlite appears as follows under microscope
A.Dark
B.White
C.Light
D.Finger print

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363. Cementite in white cast iron appears as follows under microscope
A.Dark
B.White
C.Light
D.Finger print

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364. Ferrite appears as follows under microscope
A.Dark
B.White
C.Light
D.Finger print

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