MCQ
Laughing gas is prepared by heating
- ✓$NH_4Cl + NaNO_3$
- B$NH_4Cl$
- C$NH_4NO_2$
- D$Pb(NO_3)_2$
$N{H_4}N{O_3}\xrightarrow{\Delta }2{H_2}O + {N_2}O$ (Laughing gas)
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Assertion $A$: Alcohols react both as nucleophiles and electrophiles.
Reason $R$: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen.
In the light of the above statements, choose the correct answer from the options given below:
$xBrO_3\,^-+ yCr^{+3} + zH_2O \to Br_2 + CrO_4 ^{-2} + H^+$
the coefficients $x, y, z$ are
In which case the value of $\Delta H_{sol.} < 0$