MCQ
If $N$ and $S$ are present in an organic compound during Lassaigne test, then both changes into
- A$N{a_2}S$ and $NaCN$
- ✓$NaSCN$
- C$N{a_2}S{O_3}$ and $NaCN$
- D$N{a_2}S$ and $NaCNO$
$3NaCNS + FeC{l_3} \to \mathop {\mathop {Fe{{(CNS)}_3}}\limits_{{\rm{Ferric sulpho cyanide}}} }\limits_{{\rm{(Blood red colour)}}} + 3NaCl$
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$3p_x,\,2s,\,4d_{xy},\,3s,\,4p_z,\,3p_y,\,4s$
$CH _{3} OH (1)+\frac{3}{2} O _{2}( g ) \rightarrow CO _{2}( g )+2 H _{2} O (1)$
the amount of heat produced as measured by bomb calorimeter is $726 \,kJ\, mol ^{-1}$ at $27^{\circ} C$. The enthalpy of combustion for the reaction is $- x \,kJ\,mol ^{-1}$, where $x$ is $.....$ (Nearest integer)
$\left(\right.$ Given $: R =8.3\, J\,K ^{-1} \,mol ^{-1}$ )