Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202619 April 2026Morning ShiftChemistryAlcohols Phenols and EthersActual

Which from the following hydroxy compounds contain only one - OH group in a molecule?

Options

  1. ACrotonyl alcohol
  2. BEthylene glycol
  3. CPyrogallol
  4. DHydroquinone

Correct answer

A. Crotonyl alcohol

Step-by-step solution

Crotonyl alcohol (2-buten-1-ol) has the structure CH ₃- CH = CH - CH ₂ OH , which contains only one - OH group. Ethylene glycol (ethane-1,2-diol) has the structure HO - CH ₂- CH ₂- OH , which contains two - OH groups. Pyrogallol (benzene-1,2,3-triol) contains three - OH groups attached to a benzene ring. Hydroquinone (benzene-1,4-diol) contains two - OH groups attached to a benzene ring. Therefore, crotonyl alcohol is the only compound among the given options that contains a single - OH group.

Practice Alcohols Phenols and Ethers on Quantrex Academy →

More from Alcohols Phenols and Ethers

Consider the series of reactions given and identify the final product [Z]. 2026An unsaturated organic compound (C₃ H₆ ), undergoes the following series of reactions: C ₃ H ₆ dil H₂SO₄ [ B ] ( Major Product ) + HCl / ZnCl₂ [ C ] Na_ (s) / dry ether [ D ] Ident 2026Two statements [A] and [B] are given below. Choose the correct option. A) Protonated R - CH₂- OH can serve as Electrophiles while neutral R - OH acts as a Nucleophile. B) The bond 2026Choose the incorrect statement. 2026A compound [X] undergoes reactions as given. Identify compounds [C] and [D] formed in these reactions. 2026Choose the correct reason: o-hydroxybenzaldehyde is a liquid at room temperature while p -hydroxy-benzaldehyde is a high melting solid, because 2026Match reactions in Column I with the corresponding products formed as given in Column II. Column I Column II A. C ₆ H ₅ N ₂^+ Cl ^- + H ₂ O warm P. p–Bromophenol B. C ₆ H ₅ OH + Br 2026An aliphatic compound [X], Molecular formula ( C ₄ H ₁₀ O ) can be prepared from Acetone and R– Mg–X. [X] with 20% Phosphoric acid gives an unsaturated compound C ₄ H ₈ [Y]. Compou 2026 Full Alcohols Phenols and Ethers list All MHT CET PYQs