MCQ
Which of the following conversions involves change in both shape and hybridisation?
- A${H_2}O\, \to \,{H_3}{O^ + }$
- ✓$B{F_3}\, \to \,BF_4^ - $
- C$C{H_4}\, \to \,{C_2}{H_6}$
- D$N{H_3}\, \to \,NH_4^ + $

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Reason : The reaction involves syn-addition of bromine.