- AIt is an active form of lead
- BIts molecular formula is $P{b_2}{O_3}$
- CIt decomposes into $Pb$ and $C{O_2}$
- ✓It decomposes into $PbO$ and ${O_2}$
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| List-I (Molecule) | List-II (Bond order) |
| (a) $Ne _2$ | (i) 1 |
| (b) $N _2$ | (ii) 2 |
| (c) $F _2$ | (iii) 0 |
| (d) $O _2$ | (iv) 3 |
$\begin{array}{*{20}{c}}
{C{H_2} = CHC{H_2}CHC{H_3} + KOH\xrightarrow[{heat}]{{{\text{alcohol}}}}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$
take place in two steps :
$(a)$ $Br^{-} + H^{+} + H_2O_2 \xrightarrow{{slow}} HOBr + H_2O$
$(b)$ $HOBr + Br^{-} + H^{+} \xrightarrow{{fast}} H_2O + Br_2$
The order of the reaction is
$2 \mathrm{~A}_{(\mathrm{g})}+\mathrm{B}_{(\mathrm{g})} \rightarrow \mathrm{C}_{(\mathrm{g})}$
The initial rate of the reaction is recorded as $r_1$ when the reaction starts with $1.5 \mathrm{~atm}$ pressure of $\mathrm{A}$ and $0.7 \mathrm{~atm}$ pressure of B. After some time, the rate $r_2$ is recorded when the pressure of $C$ becomes $0.5 \mathrm{~atm}$. The ratio $r_1: r_2$ is $\qquad$ $\times 10^{-1}$.
(Nearest integer)
${\Lambda ^o}_{NaCl}\, = \,{\lambda ^o}_{N{a^ + }} + {\lambda ^o}_{C{l^{\, - }}}$
Reason : This is according to Kohlrausch law of independent migration of ions