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ডিটারজেন্ট হলো -

C H_{3} {(C 1_{2})}_{14} C O_{2} N a

C H_{3} {(C H_{2})}_{14} C O_{2} N a

C H_{3} {(C O_{2})}_{14} C O_{2} N a

C H_{3} {(C H_{2})}_{10} C H_{2} S O_{4} N a

{(C H_{3})}_{2} C H S O_{3} N a

ANS : 4

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