MCQ
Which of the following react with $HBr$ at faster rate ?
- A

- ✓

- C

- D







Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.




Assertion $A$: Helium is used to dilute oxygen in diving apparatus.
Reason $R:$ Helium has high solubility in $O _2$.
In the light of the above statements, choose the correct answer from the options given below