AP EAMCET · Chemistry · Hydrocarbons

Identify ortho and para directing groups from the following :
\(\begin{array}{cccc}-\mathrm{CHO}, & -\mathrm{NHCOCH}_3, & -\mathrm{OCH}_3, & -\mathrm{SO}_3 \mathrm{H} \\ \text { I } & \text { II } & \text { III } & \text { IV }\end{array}\)

A III, IV
B II, III
C II, IV
D I, IV

Verified Solution

Answer & Solution

Correct Answer

(B) II, III

Step-by-step Solution

Detailed explanation

Generally, electron withdrawing groups such as - \(\mathrm{CHO}\) and \(\mathrm{SO}_3 \mathrm{H}\) group are meta directing group. Whereas electron donating groups such as \(-\mathrm{OCH}_3,-\mathrm{NHCOCH}_3\) group are ortho and para directing group. These groups increase the…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From AP EAMCET

Explore more questions on app

Identify ortho and para directing groups from the following :\(\begin{array}{cccc}-\mathrm{CHO}, & -\mathrm{NHCOCH}_3, & -\mathrm{OCH}_3, & -\mathrm{SO}_3 \mathrm{H} \\ \text { I } & \text { II } & \text { III } & \text { IV }\end{array}\)

Step-by-step Solution

Identify ortho and para directing groups from the following :
\(\begin{array}{cccc}-\mathrm{CHO}, & -\mathrm{NHCOCH}_3, & -\mathrm{OCH}_3, & -\mathrm{SO}_3 \mathrm{H} \\ \text { I } & \text { II } & \text { III } & \text { IV }\end{array}\)