MCQ
Dimerisation in carboxylic acid is due to
- AIonic bond
- BCovalent bond
- CCoordinate bond
- ✓Intermolecular hydrogen bond
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Reason : In mercury cell, the electrolyte is a paste of $KOH$ and $ZnO$.
$(A)$ Total number of valence shell electrons at metal centre in $Fe ( CO )_5$ or $Ni ( CO )_4$ is $16$
$(B)$ These are predominantly low spin in nature
$(C)$ Metal-carbon bond strengthens when the oxidation state of the metal is lowered
$(D)$ The carbonyl $C - O$ bond weakens when the oxidation state of the metal is increased