JEE Main 2022 Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main 2022

Match List-I with List-II. List-I: (A) Concentration of Gold ore (B) Leaching of alumina (C) Froth stabilizer (D) Blister copper List-II: (I) Aniline (II) NaOH (III) (IV) NaCN Choose the correct answer from the options given below.

(1)(A)-(IV), (B)-(III), (C)-(II), (D)-(I)
(2)(A)-(IV), (B)-(II), (C)-(I), (D)-(III)Correct
(3)(A)-(III), (B)-(II), (C)-(I), (D)-(IV)
(4)(A)-(II), (B)-(IV), (C)-(III), (D)-(I)

Answer: (2)

Solution

Gold ore is concentrated (leached) with NaCN. Bauxite is leached with NaOH to obtain alumina. Aniline and cresols are used as froth stabilisers in

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Question ID VK-034571