Question

Which of the following is not included in the Natural Sand?

(a) Organic Matter

(b) Water

(c) Clay

(d) Graphite

I got this question during an interview.

This question is from Requirements of the Base Sand topic in portion Sand Moulding of Foundry and Forging

Answer 1

Right answer is (d) Graphite

The explanation is: Natural Sand is usually imported from the banks of the water sources. Hence the water content, clay and organic matter are expected from the sand content. However, the chances of the Graphite content are minimal.