A. Vander Waal’s
B. Ionic
C. Metallic
D. Covalent
Related Mcqs:
- 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 - The majority charge carriers in p-type silicon are______________________?
A. Free electrons
B. Ions
C. Conduction electrons
D. Holes - Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by_________________?
A. Conduction
B. Convection
C. Radiation
D. Both A. & B. - The type of pump used for lifting large quantity of sewage is a _________________ pump ?
A. Gear
B. Centrifugal
C. Reciprocating
D. Plunger - For dynamic strain measurement, the Wheatstone bridge used is of ______________ type ?
A. Voltage sensitive null
B. Voltage sensitive deflected
C. Current sensitive deflected
D. None of these - As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the _____________ joint ?
A. Butt
B. Lap
C. Welded
D. None of these - Which of the following is not an ore of copper ?
A. Cryolite
B. Azurite
C. Chalcopyrite
D. Malachite - Which of the following mainly decides the current to be employed is arc welding ?
A. Electrode size
B. Plate thickness
C. Voltage across the arc
D. Welded portion length - Which of the following if present in iron ore, enhances its value ?
A. Alumina
B. Alkali oxide
C. Lime & Magnesia
D. None of these - Earing is a defect found in steels after the following metal working operation ?
A. Extrusion
B. Rolling
C. Deep drawing
D. Wire drawing
