Chapter 9: Solutions — Online MCQ Test

SCIENCE · CLASS 10th · Tamil Nadu State Board
Practice Chapter 9: Solutions with a free chapter-wise online MCQ test. This chapter covers: This chapter covers solution types solute solvent interactions solubility factors and concentration expressions. Students study saturated unsaturated supersaturated solutions and h.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 9: Solutions — Important Questions & Answers

Which component is present in a smaller amount in a binary solution?

A. Solvent
B. Solute
C. Solution
D. Mixture

Answer: B. Solute
In a binary solution, the substance present in a smaller quantity is called the solute.

What is the universal solvent?

A. Alcohol
B. Benzene
C. Water
D. Acetone

Answer: C. Water
Water is known as the universal solvent because it dissolves a wide range of substances.

Which factor does NOT affect the solubility of a solid solute in a liquid?

A. Nature of solute
B. Nature of solvent
C. Temperature
D. Atmospheric pressure

Answer: D. Atmospheric pressure
The solubility of solids in liquids is generally unaffected by changes in pressure.

Consider a saturated solution at 25°C. If the temperature is increased to 50°C, the solution becomes:

A. Saturated
B. Unsaturated
C. Supersaturated
D. Concentrated

Answer: B. Unsaturated
Since solubility typically increases with temperature, a saturated solution becomes unsaturated when heated.

A substance 'X' loses its water of crystallization upon exposure to air and turns into a powdery form. This process is called:

A. Deliquescence
B. Efflorescence
C. Hygroscopy
D. Hydration

Answer: B. Efflorescence
Efflorescence is the property of certain hydrated salts to lose their water of crystallization to the atmosphere.