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 ?

Related Mcqs:

1. A material is able to retain the deformation permanently by virtue of its___________________?

   A. Elasticity
   B. Plasticity
   C. Ductility
   D. Malleability

2. The process of coating steel sheets by zinc to improve its corrosion resistance is called___________________?

   A. Calorising
   B. Galvanising
   C. Zincification
   D. Tempering

3. Galvanising (i.e., zinc coating) of steel sheets is done to______________________?

   A. Prevent its rusting by contact with corrosive atmosphere
   B. Protect the base metal by cathodic protection
   C. Both A. & B.
   D. Neither A. nor B.

4. The main purpose of galvanising iron sheets is to___________________?

   A. Harden the surface
   B. Increase its glossiness and lustre
   C. Prevent the action of water
   D. Prevent the action of oxygen

5. The behaviour of visco-elastic material is time dependent. This behaviour is common in _____________ materials?

   A. Non-crystalline solid
   B. Crystalline
   C. Rubbery
   D. Non-crystalline organic polymeric

6. Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________?

   A. Ultimate tensile strength (U.T.S.)
   B. Endurance limit
   C. Elastic limit
   D. None of these

7. ____________ alloys have the highest specific strength of all the structural materials out of the following?

   A. Magnetic steel
   B. Titanium
   C. Chromium
   D. Magnesium

8. Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?

   A. Silicone rubber, teflon, porcelain and wood
   B. Nickel, monel, stainless steel and graphite
   C. Aluminium, copper, high silicon iron
   D. Brass, cast iron, mild steel and tin

9. Visco-elastic behaviour of materials which is time dependent is common in______________?

   A. Plastics
   B. Crystalline solid
   C. Non-crystalline solids
   D. Non-crystalline organic polymer

10. All materials obey Hooke’s law within elastic limit. When elastic limit is reached, the tensile strain__________________?

    A. Increases very quickly
    B. Decreases very quickly
    C. Increases in proportion to stress
    D. Decreases in proportion to stress