Hard Practice — Advanced Set

Hard Practice — Multi-step Reasoning & Synthesis

These questions chain two or more ideas: reaction sequences (A $\to$ B $\to$ C), combined test logic (Tollens' + iodoform + Fehling's), acidity/reactivity ordering with justification, and product prediction. Work forward step by step and identify the group being tested at each stage.

• Acidity: carboxylic acid $>$ phenol $>$ water $>$ alcohol; $-I/-M$ raise, $+I/+M$ lower.
• Tests: aldehyde (Tollens'/Fehling'), $CH_3CO$-/$CH_3CH(OH)$- (iodoform), phenol (neutral $FeCl_3$), acid ($NaHCO_3$), $1^\circ/2^\circ/3^\circ$ alcohol (Lucas).