# Which of the following is not formed when

Question:

Which of the following is not formed when $\mathrm{H}_{2} \mathrm{~S}$ reacts with acidic $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}$ solution ?

1. $\mathrm{K}_{2} \mathrm{SO}_{4}$

2. $\mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}$

3. S

4. $\mathrm{CrSO}_{4}$

Correct Option: , 4

Solution:

Solution Not Required