Answer / satish

Dissolve 1gm of compound in 100ml 0f water and check the pH 
if  pH is 1-7 then compound is acidic
if pH is 7-14 then basic 

Answer / ramgepharma

by functional group present in the compound structure
eg:
acidic groups are ionisable and protanated or neutral form like CooH, OH, ketone etc (Polar)

Basic drugs are anaionic like NH3, no2 etc (Non-polar)

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