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পরীক্ষাগারে

C_{6} H_{5} - O - C O - C_{6} H_{6}

C_{6} H_{6} + C_{6} H_{5} C O O H

C_{6} H_{5} O N a + C_{6} H_{5} C O O H

C_{6} H_{5} O H + C_{6} H_{5} C O O N a

C_{6} H_{5} O N a + C_{6} H_{5} C O C l

ANS : 3

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