Exams › JEE Main › Chemistry

Which of the following ore is concentrated using group 1 cyanide salt?

1. Sphalerite
2. Calamine
3. Siderite
4. Malachite

Correct answer: Sphalerite

Solution

Sphalerite, which is primarily composed of zinc sulfide, is effectively concentrated using cyanide salts due to the ability of cyanide to selectively bind with zinc ions, facilitating their extraction during the processing of the ore.

Related JEE Main Chemistry questions

• In the sequence used during extraction and purification of a metal, a metal sulphide is first converted to a metal oxide, then to an impure metal, and finally to a pure metal: Metal sulphide —x→ Metal oxide —y→ Impure metal —z→ Pure metal. What are x, y and z respectively?
• In Bayer’s process, which substance is employed as the reagent?
• Thomas slag refers to which of the following substances?
• Which of the following fluxes is employed to eliminate acidic impurities during a metallurgical operation?
• Which material is used to provide a basic lining to a furnace?
• Electromagnetic separation is employed in the beneficiation of which ore?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →