Question:সর্বাপেক্ষা দর্বল অম্ল কোনটি? 

A `HNO_2` 
B `HNO_3` 
C `H_2SO_3` 
D `H_2SO_4` 
E `H_3PO_4` 

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A 

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Md. Shariful Islam

Editor, VCampus

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