The hybridisation of atomic orbitals of nitrogen in $\mathrm{NO}_2{ }^{+}, \mathrm{NO}_3{ }^{-}$and $\mathrm{NH}_4{ }^{+}$are respectively
$s p, s p^2, s p^3$
$s p, s p^3, s p^2$
$s p^2, s p^2, s p^3$
$s p^2, s p, s p^3$
An aliphatic compound $[\mathrm{X}]$, Molecular formula $\left(\mathrm{C}_4 \mathrm{H}_{10} \mathrm{O}\right)$ can be prepared from Acetone and $\mathrm{R}-\mathrm{Mg}-\mathrm{X}$.
$[\mathrm{X}]$ with $20 \%$ Phosphoric acid gives an unsaturated compound $\mathrm{C}_4 \mathrm{H}_8[\mathrm{Y}]$. Compound $[\mathrm{Y}]$ is also obtained on heating $[\mathrm{X}]$ with Copper metal at 573 K . $[\mathrm{X}]$ shows no reaction with PCC but on heating with acidified $\mathrm{KMnO}_4$ it forms Acetone $+\mathrm{CO}_2+\mathrm{H}_2 \mathrm{O}$.
Compounds $[\mathrm{X}]$ and $[\mathrm{Y}]$ are $\_\_\_\_$ and $\_\_\_\_$
[X]: Butan-2-ol [Y]: But-2-ene
[X]: 2-Methylpropan-1-ol [Y]: But-1-ene
[X]: 2-Methylpropan-2-ol [Y]: 2-Methylpropene
[X]: Butan-1-ol [Y]: But-1-ene
Rate law can be determined from a balanced chemical equation if
one of the reactants is in excess
there is a sequence of elementary reactions
it is a reversible reaction
it is an elementary reaction
What is the percentage dissociation of 0.8 ml of Acetic acid (density is $1.04 \mathrm{~g} / \mathrm{ml}$ ) which is dissolved in 1.2 L of water if the observed Depression in freezing point is 0.0228 K ? ( $\mathrm{K}_{\mathrm{f}}$ for water $=1.86 \mathrm{Kkg} / \mathrm{mol}$.)
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