MCQ
Silver nitrate is mainly used
- ✓In photography
- BIn model formation
- CAs reducing agent
- DAs dehydrating agent
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| Column $-I$ | Column $-II$ |
| $(A)$ Ionisation potential | $(P)$ $O < F < N$ |
| $(B)$ Electronegativity | $(Q)$ $N < O < F$ |
| $(C)$ $Z_{eff}$ | $(R)$ $O < N < F$ |
| $(D)$ Electron affinity | $(S)$ $N < C< O$ |

Reason : The only property that determines its aromatic behaviour is its planar structure.
$(A)$ The acidity of compound $I$ is due to delocalization in the conjugate base.
$(B)$ The conjugate base of compound IV is aromatic.
$(C)$ Compound II becomes more acidic, when it has a $- NO _2$ substituent.
$(D)$ The acidity of compounds follows the order $I > IV > V > II > III$.