MPSC Rajyaseva 2024 GS Paper 1 — Question 67

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खालीलपैकी कोणती/त्या धातुंची/च्या जोडी/जोड्या त्यांच्या खनिजांपासून वेगळे करण्यासाठी साईनाईड जटिल आयनचे द्रावण वापरतात ? / Which of the following pair/pairs of metal/metals can be extracted from their ores by using cyanide complex solutions ?

(a)Cu आणि Au / Cu and Au

(b)Co आणि Ag / Co and Ag

(c)Au आणि Ag / Au and Ag

(d)Na आणि Hg / Na and Hg

1)दोनों (A) आणि (B) / Both (A) and (B)

2)फक्त (C) / Only (C)✓ Correct

3)फक्त (D) / Only (D)

4)दोनों (C) आणि (D) / Both (C) and (D)

Cyanide process (MacArthur-Forrest cyanide process) is a hydrometallurgical technique used for extracting precious metals like Gold (Au) and Silver (Ag) from their ores.

🏛️ The Maharashtra angle

Standard metallurgy topic from Class 10/12 Science textbooks prescribed in Maharashtra.

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