MCQ
The largest bond angle is in
- A$As{H_3}$
- ✓$N{H_3}$
- C${H_2}O$
- D$P{H_3}$

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$X \rightleftharpoons 2Y$ and $Z \rightleftharpoons P + Q,$
respectively are in the ratio of $1 : 4.$ If the degree of dissociation of $X$ is $2$ times that of $Z,$ then the ratio of total pressure $(P_1 : P_2)$ at these equilibria is : (Assume degree of dissociation for both reactions are very very small)
$PH _{3}, B _{2} H _{6}, CCl _{4}, NH _{3}, LiH$ and $BCl _{3}$ is ..... .