Q29 · CSIR-NET Chemistry, December 2017

Paper: CSIR-NET December 2017 · Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Bioinorganic Chemistry – General · Marks: 2 · Difficulty: Medium

The number of inorganic sulfides in cubane like ferredoxin and their removal method, respectively, are
(a)eight and washing with an acid
(b)four and washing with a base
(c)eight and washing with a base
(d)four and washing with an acid
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
The Fe₄S₄ cubane holds four inorganic sulfides, released as H₂S on acid treatment (acid-labile sulfide).

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