MCQ
An ideal gas is expanded from $1 \times 10^{-3} \,m^3$ to $1 \times 10^{-2} \,m^3$ against constant pressure of $1 \times 10^5\, N/m^2$ at $300\, K$. The work done is
- A$900\, KJ$
- B$-900\, KJ$
- C$270\, KJ$
- ✓$-900\, J$
$ \mathrm{W}=-\mathrm{P}_{\mathrm{ex}} \Delta \mathrm{V}=-1 \times 10^{5} \times 0.9 \times 10^{-2} \,\mathrm{J} $
$=-900\, \mathrm{J}$
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${P_4}\xrightarrow{{{O_2}}}'X'$
${P_4}\xrightarrow{{{O_2}(excess)}}'Y'$
$(i)\, {CCl_3}^-$ $(ii)\,CCl_2$ $(iii)\, (SiH_3)_2O$ $(iv)\, N(SiH_3)_3$
| Molecule | $P-X$ (axial) bond length | $P-X$ (Equitorial) bond length |
| $PF_5$ | $a$ | $b$ |
| $PF_4CH_3$ | $c$ | $d$ |
| $PF_3 (CH_3)_2$ | $e$ | $f$ |
| $PCl_5$ | $g$ | $h$ |
According to given information choose the incorrect order of bond length