Question

Which of the following statement is NOT correct about solution?

• A. The three states of matter solid, liquid and gas may play the role of either solute or solvent.
• B. The component of solution which constitutes smaller part is called solute.
• C. When water is solvent, the process of solvation is known as hydration.
• D. True solution is a heterogeneous mixture of two or more substances with fixed composition.

Hint:

A true solution is always a homogeneous mixture, meaning that the components are evenly distributed.

Answer 1

The Correct Option is D

Step 1: Understanding True Solutions.
A true solution is a homogeneous mixture, not heterogeneous. In a true solution, solute particles are uniformly distributed in the solvent. This makes the solution appear uniform throughout, and it does not separate into different phases. The components of a true solution are not fixed but can vary, as the concentration of solute can change.

Step 2: Analyzing the options.
(A) The three states of matter solid, liquid and gas may play the role of either solute or solvent: Correct. Any of the three states (solid, liquid, or gas) can be a solute or a solvent in different types of solutions.
(B) The component of solution which constitutes the smaller part is called solute: Correct. The solute is the substance present in a smaller quantity in a solution, while the solvent is the substance present in a larger quantity.
(C) When water is solvent, the process of solvation is known as hydration: Correct. Hydration refers to the process of solvation when water is the solvent.
(D) True solution is a heterogeneous mixture of two or more substances with fixed composition: Incorrect. A true solution is a homogeneous mixture, not heterogeneous, and its composition is not fixed.

Step 3: Conclusion.
The incorrect statement is (D), as a true solution is homogeneous, not heterogeneous.