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NDA 2025
Exam
NDA
Year
2025
Subject
General Ability
Chapter
General Science

NDA 2025 · General Ability · General Science

Which one of the following is NOT a heterogeneous mixture?

Which one of the following is NOT a heterogeneous mixture?

Options

  1. ASulphur in carbon disulphide
  2. BMixture of sugar and salt crystals
  3. CSandy water
  4. DSulphur in water

Correct answer

A. Sulphur in carbon disulphide

Step-by-step solution

Sulphur is a non-polar solid and carbon disulphide (CS_2)isanon−polarsolvent.<br><br>Accordingtotheprincipleoflikedissolveslike,sulphurdissolvescompletelyincarbondisulphidetoformatruesolution.<br><br>Atruesolutionisahomogeneousmixture,notaheterogeneousmixture.<br><br>Mixtureofsugarandsaltcrystals,sandywater,andsulphurinwaterdonotformtruesolutionsandareheterogeneousmixtures.<br><br>Answer:Sulphurincarbondisulphide) is a non-polar solvent.<br><br>According to the principle of like dissolves like, sulphur dissolves completely in carbon disulphide to form a true solution.<br><br>A true solution is a homogeneous mixture, not a heterogeneous mixture.<br><br>Mixture of sugar and salt crystals, sandy water, and sulphur in water do not form true solutions and are heterogeneous mixtures.<br><br>Answer: Sulphur in carbon disulphide
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