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GATE 2025 ES – Question 43

Environmental Chemistry · Fundamentals of Environmental Chemistry · 2 marks · Multiple select

Which statements about water solubility are correct?

  1. Water is polar because charge is asymmetrically distributed between O and H.
  2. Shared electrons are attracted more toward H.
  3. Nonpolar compounds are highly soluble because they interact strongly with water.
  4. Aromaticity and molecular charge influence aqueous solubility.

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Show answer and explanation

Correct answer: (A) Water is polar because charge is asymmetrically distributed between O and H.; (D) Aromaticity and molecular charge influence aqueous solubility.

Explanation

Oxygen’s greater electronegativity and water’s bent geometry produce molecular polarity, so A is correct and B reverses electron attraction. Nonpolar molecules generally lack comparably favorable water interactions, making C false. Charge and molecular structure, including aromaticity, affect hydration and solubility, so D is correct. Select **A, D**.

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