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Which of the following is a true solution? (a) Vinegar solution (b) Blood (c) Milk (d) Muddy water
(a) Vinegar (acetic acid) dissolves in water to give a true solution.
https://www.tiwariacademy.com/ncert-solutions-class-9-science-curiosity-chapter-2/
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The correct answer is: (a) Vinegar solution. A true solution is a homogeneous mixture where solute particles are completely dissolved in the solvent and cannot be seen under a microscope. Vinegar is a true solution of acetic acid in water, making it a homogeneous mixture.
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-2/