MCQ
Gas that can not be collected over water is
- A$N_2$
- ✓$O_2$
- C$SO_2$
- D$PH_3$
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Consider the above reaction, the product $'X'$ and $'Y'$ respectively are :

| $List-I$ | $List-II$ |
| $A$ $\left( NH _{4}\right)_{2} Cr _{2} O _{7} \stackrel{\Delta}{\longrightarrow}$ | $I$ $H _{2}$ |
| $B$ $KMnO _{4}+ HCl \rightarrow$ | $II$ $N _{2}$ |
| $C$ $Al + NaOH + H _{2} O \rightarrow$ | $III$ ${ O _{2}}$ |
| $D$ $NaNO _{3} \stackrel{\Delta}{\longrightarrow}$ | $IV$ ${ Cl _{2}}$ |
Choose the correct answer from the options given below.
Select the correct option for $'X'$ and $'Y'$