MCQ
The most predominantly ionic compounds will be obtained from the combination of elements belonging to
- ✓$1$ and $7$ groups
- B$2$ and $6$ groups
- C$3$ and $5$ groups
- D$0$ and $7$ groups
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The number of following statements which is/are correct about phenolphthalein is $.....$.
$A$. It can be used as an indicator for the titration of weak acid with weak base.
$B$. It begins to change colour at $pH =8.4$
$C$. It is a weak organic base
$D$. It is colourless in acidic medium
The decreasing order of the rate of the above reaction with nucleophiles $(Nu^-)$ $A$ to $D$ is
$[Nu^-=(A) \,PhO^-, (B)\,AcO^-, (C)\, HO^-, (D)\, CH_3O^-]$

What is the major product i.e. $X$ in the reaction?