Question

____________ is the oldest binder used in making cores.

(a) Coal tar

(b) Dextrin

(c) Molasses

(d) Vegetable oil

I have been asked this question in an interview for internship.

My query is from Binders used in Making Cores in section Sand Moulding of Foundry and Forging

Answer 1

The correct answer is (d) Vegetable oil

Best explanation: The concept of foundry emerged several years ago. As vegetable oil is considered to have several binding properties, it was used. It gained its popularity due to its wide availability and less expensive in nature.