Question

TINCTURE IODINE IS: (A). IS A TRUE SOLUTION (B). IS A HOMOGENOUS MIXTURE (C). SHOWS TYNDALL EFFECT



ONLY A , B

ALL A, B AND C

ONLY A

ONLY B AND C


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Answer 1

Tincture of Iodine is a mixture of Potassium Iodide, Iodine dissolved in the solution of alcohol and water.

☃️ It is also known as Lugol.

Options:

• As when substance dissolves and mixed well in other, and also it is homogeneous, We can say that it is a True solution. A✔
• Now, A true solution is homogeneous, that is uniform composition throughout the solution. B✔
• True solution contains very tiny particles and hence, they couldn't scatter light passing through the solution. Hence, it doesn't show Tyndall effect. C❌

Correct Answer is:

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Explore more !!

As the above question is about true solution of Iodine and alcohol, Let's know more about true solutions:

• Mixtures are of two types:-

1. Homogeneous (True solution)
2. Heterogeneous (Colloid and Suspensions)

• When one substance mixes with the other substance, they form a homogeneous mixture like True solutions. Here, the solute and solvent mixes with each other.
• For true solutions, The components should be non reacting and able to mix with each other.
• Here, Solute can be solid, liquid or gas and Solvent can be solid, liquid or gas.
• The size of the particles is very small and it can't scatter light when passed through it.
• It is stable in nature and the particles don't settle down when left undisturbed.
• The particles pass through filter paper, So it can't be separated by this method. For separation, we can use Evaporation and Crystallization instead.

⚘ When water is the solvent in a solution, it called as Aqueous solution. And when the solvent is any other substance like Alchohol, Gases or Benzene, They are known as Non-aqueous solution.

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Answer 2

Options:

As when substance dissolves and mixed well in other, and also it is homogeneous, We can say that it is a True solution. A✔

Now, A true solution is homogeneous, that is uniform composition throughout the solution. B✔

True solution contains very tiny particles and hence, they couldn't scatter light passing through the solution. Hence, it doesn't show Tyndall effect. C❌