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কোনটি জারণ-বিজারণ বিক্রিয়া নয় -

2 F e C l_{3} (a q) + S n C l_{2} (a q) \to S n C l_{4} (a q) + 2 F e C l_{2} (a q)

P b S (s) + 4 H_{2} O_{2} (a q) \to P b S O_{4} (a q) + 4 H_{2} O (1)

H_{2} S (a q) + C l_{2} \to 2 H C l (a q) + S (s)

N a C l (a q) + A g N O_{3} (a q) \to A g C l (s) + N a N O_{3} (a q)

ANS : 4

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