Properties of Bulk Matter Quiz - CBSE Class 11 Science
Free practice quiz: Properties of Bulk Matter (CBSE Class 11 Science). 20 multiple-choice questions with answers and explanations. Play online, no sign-up needed.
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Which of the following is NOT a bulk property of matter?
- Density
- Viscosity
- Mass
- Color
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Answer: D. Color
Color is an intensive property, depending on the substance itself rather than the amount. Density, viscosity, and mass are all extensive properties that change with the amount of substance.
What is surface tension?
- The force that causes the surface of a liquid to contract
- The force that causes a liquid to spread out
- The force that causes a liquid to boil
- The force of attraction between molecules in a liquid
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Answer: A. The force that causes the surface of a liquid to contract
Surface tension is the tendency of liquid surfaces to shrink into the minimum surface area possible.
What are adhesive forces?
- Forces of attraction between molecules of the same substance
- Forces of attraction between molecules of different substances
- Forces of repulsion between molecules of the same substance
- Forces of repulsion between molecules of different substances
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Answer: B. Forces of attraction between molecules of different substances
Adhesive forces are intermolecular forces of attraction between unlike molecules.
Describe the process of osmosis.
- The movement of solvent molecules across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration
- The movement of solute molecules across a semipermeable membrane from a region of higher solute concentration to a region of lower solute concentration
- The movement of solvent molecules across a permeable membrane
- The movement of any molecule across a membrane
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Answer: A. The movement of solvent molecules across a semipermeable membrane from a region of lower solute concentration to a region of higher solute concentration
Osmosis is the movement of water molecules across a selectively permeable membrane from a region of higher water concentration (lower solute concentration) to a region of lower water concentration (higher solute concentration).
Explain the concept of elevation in boiling point.
- The increase in boiling point of a liquid when a non-volatile solute is added
- The decrease in boiling point of a liquid when a non-volatile solute is added
- The increase in boiling point of a liquid when a volatile solute is added
- The decrease in boiling point of a liquid when a volatile solute is added
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Answer: A. The increase in boiling point of a liquid when a non-volatile solute is added
Adding a non-volatile solute to a solvent increases the boiling point of the solution, a phenomenon known as boiling point elevation.