Alcohols, Phenols & Ethers

Assertion (A): The Br₂/H₂O test distinguishes phenol from cyclohexanol (both cyclic, 6-membered-ring, -OH compounds). Reason (R): Phenol's ring is aromatic (sp$^2$ carbons, activated by -OH resonance) $\rightarrow$ EAS…

Three C₄H₁₀O alcohol samples treated with Lucas reagent (ZnCl₂/conc. HCl): Sample 1: immediate turbidity at RT Sample 2: turbidity after ~5-10 min warming Sample 3: no turbidity after 30+ min Correct classification:

Denatured spirit (methylated spirit) is ethanol deliberately rendered unfit for drinking. Which correctly describes its purpose and composition?

C₆H₁₂O₆ $\rightarrow$(zymase, yeast)$\rightarrow$ 2 C₂H₅OH + 2 CO₂ Which statement is CORRECT about this process?

Assertion (A): Industrial methanol plants operate at ~573-673 K, not at very low temperature despite the exothermic equilibrium being more favourable at lower T. Reason (R): At very low temperature, even with a…

Anisole + CH₃COCl/AlCl₃ $\rightarrow$ Product V + HCl. Major product V is:

Anisole + Br₂/FeBr₃ $\rightarrow$ Product + HBr. The major product is:

Anisole + conc. HNO₃/H₂SO₄, low temperature. Major products:

Assertion (A): Among HX acids, HI is the most effective for cleaving ethers, followed by HBr, with HCl the least effective. Reason (R): I⁻ is the best nucleophile among common halide ions (most polarisable, weakest…

C₆H₅ONa + C₂H₅Br $\rightarrow$ Product U + NaBr Product U is:

C₆H₅OH + CHCl₃ + NaOH(excess, aq) $\rightarrow$(60-70$^\circ$C)$\rightarrow$ [int] $\rightarrow$(H₃O⁺)$\rightarrow$ Major product:

Assertion (A): In the Reimer-Tiemann reaction, dichlorocarbene (:CCl₂) reacts preferentially at the ORTHO position of phenoxide, similar to CO₂ in Kolbe's reaction. Reason (R): The electrophilic :CCl₂ attacks the…