Which of the following is Ortho para directing group
Correct answer: A. -NHCOCH3
- A. -NHCOCH3
- B. -NO2
- C. -CN
- D. -CHO
Explanation
The correct answer is -NHCOCH3 because it can donate electrons through resonance to stabilize positive charge, making it ortho para directing. The other options (-NO2, -CN, -CHO) are meta directing groups that withdraw electrons and destabilize positive charge, making them unsuitable for ortho para orientation.
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Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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