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নিম্নোক্ত কোন বিক্রিয়াটি সঠিক নয়-

{MnO}_{2} + 4 HCl \to {MnCl}_{2} + {Cl}_{2} + 2 H_{2} O

8 {NH}_{3} + 3 {Cl}_{2} \to 6 {NH}_{4} Cl + N_{2}

2 NaOH + {Cl}_{2} \to 2 NaCl + H_{2} + O_{2}

2 Ca (OH)_{2} + 2 {Cl}_{2} \to Ca (OH)_{2} + {CaCl}_{2} + 2 H_{2} O

ANS : 0

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