Which of the following constituents of cast iron is mainly responsible for imparting it an anti-corrosive property ?

Related Mcqs:

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

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

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

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

3. Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?

   A. Acetic acid
   B. Benzoic & boric acids
   C. Phosphoric acid (95%) & sulphuric acid (95%)
   D. Hydrochloric acid (concentrated)

4. Maximum carbon content in cast iron is ______________ percent?

   A. 3.8
   B. 5.2
   C. 4.8
   D. 4.3

5. Cast iron detachable joint is used in __________ pipes.

   A. Steel
   B. Cast iron
   C. Asbestos cement
   D. Reinforced cement concrete

6. Cast iron vessels are not suitable for the storage of_________________?

   A. Freon
   B. H2SO4 (95%) at room temperature
   C. H2SO4 (fuming)
   D. Wet SO2

7. Silicon percentage in acid resistant cast iron is about________________?

   A. 4
   B. 8
   C. 14
   D. 20

8. Cast iron and steel pipes are produced by ____________ casting?

   A. Die
   B. Investment
   C. Slush
   D. True centrifugal

9. With increase in carbide/graphite ratio in cast iron, its__________________?

   A. Hardness & brittleness increases
   B. Ductility decreases
   C. Both A. and B.
   D. Neither A. nor B.

10. Presence of high phosphorous in cast iron increases its____________________?

    A. Fluidity
    B. Melting point
    C. Shrinkage
    D. Tensile strength