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MHT CET202519 Apr 2025Evening ShiftChemistryAlcohols Phenols and EthersActual

Which from following compounds is least soluble in water at STP?

Options

  1. AC ₂ H ₅ OH
  2. BCH ₃ OH
  3. CCH ₃ NH ₂
  4. DCH ₄

Correct answer

D. CH ₄

Step-by-step solution

The solubility of substances in water is determined by their ability to form hydrogen bonds and interact with the polar solvent. Ethanol ( C ₂ H ₅ OH ) and methanol ( CH ₃ OH ) contain hydroxyl groups that form strong hydrogen bonds with water. Methylamine ( CH ₃ NH ₂ ) has an amino group capable of hydrogen bonding with water molecules. Methane ( CH ₄ ) is nonpolar with only weak London dispersion forces and cannot form hydrogen bonds, making it the least soluble compound. Among these, methane exhibits the lowest

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