Water and Solution Quiz

What is a saturated solution?

• A solution containing only water.

• A solution containing more water.

• A solution that cannot dissolve more solute at a given temperature.

• A solution with high concentration.

Answer explanation

A saturated solution is one that has reached its maximum capacity to dissolve solute at a specific temperature, meaning it cannot dissolve any more solute. This distinguishes it from other types of solutions.

Which of the following is the solvent?

• Water in sugar solution.

• Salt in water.

• Chalk powder in water.

• Sugar in tea.

Answer explanation

In a sugar solution, water acts as the solvent, dissolving the sugar. The other options list solutes (salt, chalk powder, sugar) in water or tea, making them not solvents.

What is solute?

• A mixture of solute and solvent.

• The substance that dissolves other substances.

• A substance that cannot dissolve.

• The substance dissolved in a solvent.

Answer explanation

The correct choice is 'The substance that dissolves other substances.' A solute is the component in a solution that is dissolved, while the solvent is the substance that does the dissolving.

What is filtration used for?

• To combine two solutions.

• To dissolve a solid faster.

• To separate an insoluble solid from a liquid.

• To separate a soluble solid from a liquid.

Answer explanation

Filtration is used to separate an insoluble solid from a liquid by passing the mixture through a filter. This process allows the liquid to pass through while retaining the solid, making it the correct choice.

What is evaporation?

• A technique to cool water.

• A method to obtain salt from a salt solution.

• A process to separate insoluble solids.

• A way to filter a mixture.

Answer explanation

Evaporation is a method to obtain salt from a salt solution by heating the solution until the water evaporates, leaving the salt behind. This process effectively separates the salt from the liquid.

What is a saturated solution?

• A solution that cannot dissolve more solute at a given temperature.

• A solution containing more water.

• A solution containing only water.

• A solution with high concentration.

Answer explanation

A saturated solution is defined as one that cannot dissolve more solute at a given temperature, meaning it has reached its maximum solute capacity. This distinguishes it from other types of solutions.

Which of the following is the solvent?

• Salt in water.

• Water in sugar solution.

• Chalk powder in water.

• Sugar in tea.

Answer explanation

In a sugar solution, water acts as the solvent, dissolving the sugar. The other options have different solute-solvent relationships, making 'water in sugar solution' the correct choice.

What is solute?

• A mixture of solute and solvent.

• The substance dissolved in a solvent.

• The substance that dissolves other substances.

• A substance that cannot dissolve.

Answer explanation

A solute is the substance that dissolves in a solvent to form a solution. Therefore, the correct choice is 'The substance that dissolves other substances.' This highlights the role of the solute in the dissolution process.

What is filtration used for?

• To combine two solutions.

• To separate a soluble solid from a liquid.

• To separate an insoluble solid from a liquid.

• To dissolve a solid faster.

Answer explanation

Filtration is a method used to separate an insoluble solid from a liquid. It allows the liquid to pass through while retaining the solid, making it effective for this purpose.

What is evaporation?

• A process to separate insoluble solids.

• A technique to cool water.

• A way to filter a mixture.

• A method to obtain salt from a salt solution.

Answer explanation

Evaporation is a method to obtain salt from a salt solution by heating the solution, causing the water to evaporate and leaving the salt behind. This process effectively separates the salt from the liquid.