Which of the following diazonium salts is insoluble in water?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → C6H5N2+BF4−
\( \ce{C6H5N2^+BF4^-} \) is benzenediazonium fluoroborate.
NCERT (2026-27 edition):
9.8 Physical Properties – “… Benzenediazonium fluoroborate is water insoluble and stable at room temperature.”