Pick out the wrong statement.
A. Tin can be readily and very easily drawn into very fine wire
B. Tin can be severely cold worked without the necessity of annealing due to its low recrystallisation temperature
C. Tin exists in two allotropic forms
D. The predominant use of tin is in the form of coating for steel & copper alloys
Answer: Option A
This Question Belongs to Chemical Engineering >> Materials And Construction
In drop forging process, the forging is done by dropping the __________ at high velocity.
A. Hammer
B. Workpiece
C. Die with hammer
D. Weight on hammer
Most of the common metals have __________ crystal structure.
A. Cubic
B. Hexagonal
C. Orthorhombic
D. None of these
Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is
A. Used for making axle & shafts of aeroplanes, automobiles and locomotives
B. Having poor fatigue resistance
C. Having poor toughness
D. Not helpful in producing cleaner steel due to oxidising action of vanadium
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