Galvanised iron is___________________?

Related Mcqs:

1. ______________ iron is produced, when molten pig iron is allowed to cool gradually?

   A. White cast
   B. Grey cast
   C. Wrought
   D. None of these

2. White cast iron as compared to grey cast iron is ________________?

   A. More durable
   B. Very brittle
   C. Very hard
   D. All A., B. & C.

3. _____________ iron is produced, when molten pig iron is chilled suddenly?

   A. White cast
   B. Grey cast
   C. Wrought
   D. None of these

4. The impure iron (pig iron) that is tapped out from blast furnace contains about _____________ percent carbon?

   A. 0.2
   B. 2
   C. 4
   D. 8

5. Bog iron used for the adsorption of H2S from coke oven gas is___________________?

   A. An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)
   B. Iron impregnated with resin (usually Bakelite)
   C. Carbon free iron
   D. None of these

6. Wrought iron is having very high ________________?

   A. Hardness
   B. Strength
   C. Corrosion resistance
   D. Susceptibility to changes in its properties by heat treatment

7. The most distinguished property of malleable cast iron is its high_________________?

   A. Ductility
   B. Hardness
   C. Malleability
   D. None of these

8. Chilled iron castings are__________________?

   A. Easily machinable
   B. Soft on surface
   C. Highly wear resistant
   D. None of these

9. Iron rust is_________________?

   A. Ferrous oxide
   B. Hydrated ferric oxide
   C. Powdered iron
   D. Ferric sulphide

10. Which one is remelted and poured into moulds to get cast iron ?

    A. Wrought iron
    B. Pig iron
    C. Low carbon steel
    D. Mild steel