Chemistry - Metallurgy Question with Solution | TestHub

(A) Froth flotation – Correct: It is a wet process in which finely powdered ore is mixed with water to form a slurry.

(B) Magnetic separation – Incorrect: It is generally a dry process based on differences in magnetic properties.

(C) Bayer's process – Correct: Bauxite is treated with aqueous NaOH, so it is a wet chemical concentration process.

(D) Gravity (Hydraulic) separation – Correct: It uses water to separate heavier ore particles from lighter impurities based on density.

Answer: (A), (C) and (D)