What process involves pouring liquid metal into a mould to solidify?

• A. Casting
• B. Forging
• C. Sintering
• D. Machining

Answer: (A)

Pouring liquid metal into a mold to solidify is casting. In casting, the metal is melted and then poured into a mold cavity where it cools and solidifies to take the mold’s shape, allowing complex geometries and hollow features to be produced.

Forging shapes metal by deforming solid material, usually with hammering or pressing, and often at high temperature, but it doesn’t involve pouring liquid metal. Sintering uses powdered metal particles that are compacted and heated below melting to bond, not melt and pour. Machining removes material from a solid block to reach the final form, rather than forming it from molten metal.

So the described process matches casting.