JEECUP (UP Polytechnic) Alcohols, Phenols and Ethers — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JEECUP (UP Polytechnic) Alcohols, Phenols and Ethers in the app →How is glycerol (propane-1,2,3-triol) classified by the number of –OH groups it contains?
In alcohols, the oxygen atom of the C–O–H gro
The figure shows Step I of the acid-catalyseArrange in increasing order of acidic strength: methanol, ethanol, water, phenol.Ethanol is dehydrated with concentrated $\mathrm{H_2SO_4}$ at $443$ K (170 °C). What is the major product?Phenol is treated with chloroform (CHCl₃) and aqueous NaOH at $340$ K, followed by acidification. What is the Alcohols are classified as primary (1°), secondary (2°), or tertiary (3°) based on:Glycerol (propane-1,2,3-triol) is classified as:Which compound is the IUPAC name 2-methylbutan-2-ol assigned to?Reduction of a ketone (R₂C=O) with NaBH₄ or LiAlH₄ produces:A Grignard reagent R-MgX reacts with **methanal (HCHO)** to produce, after hydrolysis:A Grignard reagent R'MgX reacts with a **ketone (R₂C=O)** to produce, after hydrolysis:Phenol is industrially manufactured (worldwide majority) from:Ethanol (CH₃CH₂OH, MW 46) has bp 351 K, whereas methoxymethane (CH₃-O-CH₃, MW 46) has bp 248 K. The huge diffeAmong isomeric alcohols (e.g., butan-1-ol, butan-2-ol, 2-methylpropan-2-ol), boiling point order is:Lower alcohols (methanol, ethanol) are completely miscible with water because:Phenol reacts with **NaOH** but ethanol does NOT (with dilute aqueous NaOH). This is because:The dehydration of ethanol with concentrated H₂SO₄ at 443 K gives:The Williamson ether synthesis involves:Phenol gives the iodoform test (yellow precipitate) when treated with I₂/NaOH: