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নিচের কোন যৌগটি অ্যনহাইড্রাইড?

H_{3} C - \overset{I I^{O}}{C} - O C_{2} H_{5}

H_{3} C - \overset{I I^{O}}{C} - O - \overset{I I^{O}}{C} - C H_{3}

H_{3} C - \overset{I I^{O}}{C} - C_{2} H_{5}

H_{3} C - C H_{I_{C H_{3}}} - \overset{I I^{O}}{C} - H

None

ANS : 2

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