MCQ
Which of following is phenolic
- APhthalic acid
- BPhosphoric acid
- ✓Picric acid
- DPhenylacetic acid

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$CoCl _{3} . xNH _{3}+ AgNO _{3}( aq ) \rightarrow$
If two equivalents of $AgCl$ precipitate out, then the value of $x$ will be $....$