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1 . The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
A. hard
B. soft
C. silicon carbide
D. aluminium oxide

2 . Tin based white metals are used, where bearings are subjected to
A. high pressure & load.
B. low pressure & load.
C. high temperature.
D. large surface wear.

3 . Friction factor for fluid flow in pipe does not depend upon the
A. pipe length.
B. pipe roughness.
C. fluid density & viscosity.
D. mass flow rate of fluid.

4 . All of the following alloying elements of steel increases hardness but sacrifice ductility, except
A. nickel
B. vanadium
C. molybdenum
D. chromium

5 . The following type of bonding is strongly directional in solids.
A. Vander Waal's
B. Ionic
C. Metallic D. Covalant