MCQ
In ${H_2}{O_2}$ molecule, the angle between the two $O -H$ planes is ............. $^o$
- ✓$90$
- B$101$
- C$103$
- D$105$
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$1.$ The compounds $\mathrm{P}$ and $\mathrm{Q}$ respectively are
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$2.$ The compound $R$ is
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$3.$ The compound $\mathrm{S}$ is
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Give the answer question $1,2$ and $3.$

if one mole of each of $X$ and $Y$ with $0.05 mol$ of $Z$ gives compound $XYZ _{3}$. (Given : Atomic masses of $X , Y$ and $Z$ are 10,20 and $30 amu$, respectively). The yield of $XYZ _{3}$ is $.........g$.(Nearest integer)