The difference in one unit of Rockwell hardness number corresponds to a difference in the depth of indentation of ______________ mm ?

Related Mcqs:

The main constituent of bones is ______________________?

A. CaF2 B. Ca3(PO4)2 C. CaCO3 D. CaCl2...

Desalination of water__________________?

A. Makes it potable B. Makes it non-potable C. Means distillation of water D. None of these...

Name the safety device used to protect the boiler, when the water level falls below a minimum level ?

A. Blow down valve B. Blow off cock C. Fusible plug D. Safety valve...

For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the_____________________?

A. Reynolds number (based on sphere diameter) should be < 1 B. Flow around the sphere should be in turbulent region C. Sphere must be metallic D. Fluid density should be constant...

The activity co-efficient of the solute in a dilute solution ?

A. Decreases with the increase of concentration of the solute B. Increases with the increase of concentration of the solute C. Remains constant D. Is unity at infinite dilution...