Nature and colour forms of phenolphthalein and methyl orange

1. A.
   quinonoid form
2. B.
   heterocyclic form
3. C.
   phenolic form
4. D.
   benzenoid form

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1. A.
   Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
2. B.
   Both A and R are true but R is NOT the correct explanation of $A$.
3. C.
   $A$ is true but $R$ is false
4. D.
   $A$ is false but $R$ is true

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1. A.
   Statement I is correct but Statement II is incorrect.
2. B.
   Statement I is incorrect but statement II is correct.
3. C.
   Both Statement I and Statement II are incorrect.
4. D.
   Both statement I and Statement II are correct.

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