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Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80 - 100°C forms which one of the following products?

1. 1,3-Dinitrobenzene
2. 1,4-Dinitrobenzene
3. 1,2,4-Trinitrobenzene
4. 1,2-Dinitrobenzene

Correct answer: 1,3-Dinitrobenzene

Solution

Nitrobenzene is an electron-withdrawing group and deactivates the benzene ring, directing further substitution to the meta position. Thus, nitration of nitrobenzene forms 1,3-dinitrobenzene as the major product.

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