MCQ
Formaldehyde is used as formalin in industries:
- ATo preserve biological specimens
- BTo prepare bakelite
- ✓Both $A$ and $B$
- DNone of these
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| Column $-I$ Catalyst | Column $-II$ >Product |
| $(a)$ $V_2O_5$ | $(i)$ Polyethylene |
| $(b)$ $TiCl_4/Al(Me)_3$ | $(ii)$ Ethanal |
| $(c)$ $PdCl_2$ | $(iii)$ $H_2SO_4$ |
| $(d)$ Iron oxide | $(iv)$ $NH_3$ |
Temperature $\quad$ Equilibrium constant
$\begin{array}{ll} T _{1}=25^{\circ} C & K _{1}=100 \\ T _{2}=100^{\circ} C & K _{2}=100\end{array}$
The values of $\Delta H ^{\circ}, \Delta G ^{\circ}$ at $T _{1}$ and $\Delta G ^{\circ}$ at $T _{2}$ (in $kJ\, mol ^{-1}$ ) respectively, are close to $\left[\right.$ Use $\left. R =8.314\, JK ^{-1} mol ^{-1}\right]$
${{C}_{6}}{{H}_{6}}+C{{H}_{3}}CH=C{{H}_{2}}\xrightarrow[heat]{{{H}_{3}}P{{O}_{4}}}A\xrightarrow[2.\,{{H}_{3}}{{O}^{+}},heat]{1.\,{{O}_{2}},heat}B+C$
The products $(B)$ and $(C)$ are
$A$. Tollen's reagent $B$. Schiff's reagent $C$. $\mathrm{HCN}$ $D$. $\mathrm{NH}_2 \mathrm{OH}$ $E$. $\mathrm{NaHSO}_3$
Choose the correct options from the given below: