NEET levelSingle correct optionDifficulty 1 of 3nc148
Further nitration of nitrobenzene with fuming HNOX3 and conc. HX2SOX4 at higher temperature gives mainly
A1,2-dinitrobenzene
B1,3-dinitrobenzene
C1,4-dinitrobenzene
D1,3,5-trinitrobenzene as the only product
Answer: B
The nitro group is a deactivating, meta-directing group (-I and -R), so the second nitro group enters the meta position. Hence 1,3-dinitrobenzene is the major product.