MCQ
Strongest nucleophile is
- A$RN{H_2}$
- B$ROH$
- C${C_6}{H_5}{O^ - }$
- ✓$C{H_3}{O^ - }$
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| $List-I$ | $List-II$ |
| $A.$ Benzenesulphonyl chloride | $I.$ Test for primary amines |
| $B.$ Hoffmann bromamide reaction | $II.$ Anti Saytzeff |
| $C.$ Carbylamine reaction | $III.$ Hinsberg reagent |
| $D.$ Hoffmann orientation | $IV.$ Known reaction of Isocyanates. |
Choose the correct answer from the options given below.
$(i)$ $H_{(aq)}^+ + OH^-= H_2O_{(l)} ,$ $\Delta H = -X_1\,kJ \,mol^{-1}$
$(ii)$ $H_{2(g)} + \frac{1}{2}O_{2(g)} = H_2O_{(l)},$ $\Delta H = -X_2\,kJ \,mol^{-1}$
$(iii)$ $CO_{2(g)} + H_{2(g)} = CO_{(g)} + H_2O_{(l)},$ $\Delta H = -X_3\, kJ\, mol^{-1}$
$(iv)$ $ C_2H_{2(g)}+ \frac{5}{2} O_{2(g)} = 2CO_{2(g)} + H_2O_{(l)},$ $\Delta H = -X_4\,kJ \,mol^{-1}$
Enthalpy of formation of $H_2O_{(l)}$ is