The malleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the maximum malleability ?

Which of the following is an ore dressing operation ?

A. Classification

B. Smelting

C. Roasting

D. None of these

Shampoos are commercially not available in the form of ___________________?

A. Powder

B. Gaseous mixture

C. Solution

D. Emulsion

In multipass welds, shot peening is done after each pass to__________________?

A. Close the surface porosity

B. Break the continuity of columnar grains

C. Flatten the weldment

D. Introduce texture in the weld

Pick out the correct combination about the role of various additives used in polymers ?

A. Plasticiser: increases the polymer strength

B. Heat stabiliser: increases the maximum service temperature

C. Fillers: Does not affect the property of polymer but increases its weight

D. Lubricants: increases the flexibility of polymers

Which of the following is not used as a bearing material ?

A. Copper-lead alloys

B. Babbitts

C. Bronzes

D. Cermets