Question

Which of the following is/are the types of cast irons?

(a) Gray cast iron

(b) Malleable cast iron

(c) Nodular cast iron

(d) Gray cast iron, malleable cast iron, and nodular cast iron

I got this question in an international level competition.

This interesting question is from Materials in portion Materials of Corrosion Engineering

Answer 1

The correct answer is (d) Gray cast iron, malleable cast iron, and nodular cast iron

To elaborate: Cast iron is a generic term that applies to the high carbon-iron alloys containing silicon. Types of cast irons are gray cast iron, white cast iron, malleable cast iron, and nodular cast iron.