Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel
A. Rubber
B. Monel
C. Glass
D. Nickel
Answer: Option C
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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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