MCQ
Which has highest pKa value among phenol is
- A2,4-Dinitrophenol
- B4-Nitrophenol
- ✓2, 4, 5-Trimethylphenol
- D3-Chlorophenol
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As the $s-$ character of a hybrid orbital decreases
$(I)$ The bond angle decreases $(II)$ The bond strength increases
$(III)$ The bond length increases $(IV)$ Size of orbitals increases

$(i)\,CO(g)+ H_2O(g) \rightleftharpoons CO_2(g)+H_2(g)\,;\,K_1$
$(ii)\,CH_4(g)+H_2O(g) \rightleftharpoons CO(g)+3H_2(g)\,;\,K_2$
$(iii)\,CH_4(g) + 2H_2O(g) \rightleftharpoons CO_2(g)+ 4H_2(g)\,;\,K_3$
| List $I$ (Spectral Series for Hyddrogen) | List $II$ (Spectral Region/Higher Energy State) |
| $A$. Lyman | $I$. Infrared region |
| $B$. Balmer | $II$. $UV$ region |
| $C$. Paschen | $III$. Infrared region |
| $D$. Pfund | $IV$. Visible region |
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