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কোনটি সঠিক?

C C I_{3} O O ‐ C H_{3} + H_{2} O \to C h l o r o f o r m

(N H_{4})_{2} S O_{4} + 2 K C N O \to U r e a

(C H_{2} N H_{2} C O)_{2} . C u + H_{2} S \to G l y c e r i n e

C_{2} H_{5} I + A g O \to e t h e r

ANS : 1

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