JEE Main 2022 (26 Jul, Shift 2) Chemistry Q80: Equilibrium

Question

Given below are two statements: one is labelled as **Assertion A** and the other is labelled as **Reason R**.
**Assertion A:**Phenolphthalein is a pH dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium.
**Reason R:** Phenolphthalein is a weak acid. It doesn’t dissociate in basic medium.
In the light of the above statements, choose the *most appropriate* answer from the options given below.

Accepted Answer

Option 3: $\mathbf{A}$ is true but $\mathbf{R}$ is false.

Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true and $\mathbf{R}$ is the correct explanation of $\mathbf{A}$.

Answer

Both $\mathbf{A}$ and $\mathbf{R}$ are true but $\mathbf{R}$ is NOT the correct explanation of $\mathbf{A}$.

Answer

$\mathbf{A}$ is true but $\mathbf{R}$ is false.

Answer

$\mathbf{A}$ is false but $\mathbf{R}$ is true.

JEE Main 26 July 2022, Shift 2, Chemistry Q80

Same idea in other shifts