The smallest cation and the smallest anion are respectively

$\begin{array}{*{20}{c}}
{O = C - C{H_2} - CH - CHO} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,} \\
{OH\,\,\,\,\,\,H - C = O\,\,}
\end{array}$

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Oxygen has oxidation states of $ +2 $ in the

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Which chloroderivative of benzene among the following would undergo-hydrolysis most readily with aq. $NaOH$ to furnish the corresponding hydroxy derivative.

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$Be's$ $4^{th}$ electron will have four quantum numbers

$n$ $l$ $m$ $s$

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The solubility of $AgCN$ in a buffer solution of $pH =3$ is $x$. The value of $x$ is

[Assume : No cyano complex is formed; $K _{ sp }( AgCN )$ $=2.2 \times 10^{-16}$ and $\left. K _{ a }( HCN )=6.2 \times 10^{-10}\right]$

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The standard entropies of $C{O_2}(g),\,C(s)$ and ${O_2}(g)$ are $213.5, 5.690$ and $205\,J\,{K^{ - 1}}$ respectively. The standard entropy of formation of $C{O_2}(g)$ is......$J\,{K^{ - 1}}$

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$1\,\, L$ of ${N_2}$ combines with $3\,\, L$ of ${H_2}$ to form $2\,\,L$ of $N{H_3}$ under the same conditions. This illustrates the

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Which set of species is arranged in order of increasing $O-N-O$ bond angle

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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

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