The metals occuring at the lower most position in the electromotive series
A. Do not resist corrosion
B. Resist corrosion very strongly
C. Are very brittle
D. Are heat insulators
Answer: Option B
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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