Question

Which among the following ore is concentrated by froth flotation process?

• A. Diaspore
• B. Bauxite
• C. Dolomite
• D. Galena

Hint:

Froth flotation is commonly used for sulfide ores like galena, where the mineral particles are selectively separated using air bubbles and surfactants.

Answer 1

The Correct Option is D

Step 1: Understanding froth flotation process.
Froth flotation is a method used for concentrating ores, especially those with sulfide minerals like galena (PbS). This method works by selectively separating hydrophobic materials from hydrophilic ones in a mixture.

Step 2: Analyzing the options.
(A) Diaspore: This ore is not concentrated by froth flotation; it is an aluminum oxide ore.
(B) Bauxite: Bauxite is also not concentrated using froth flotation; it’s typically refined through Bayer’s process.
(C) Dolomite: Dolomite is not concentrated using froth flotation; it’s usually processed by calcination.
(D) Galena: Galena, a lead sulfide ore, is concentrated by the froth flotation process.

Step 3: Conclusion.
The correct answer is (D) Galena.