Sugar Solutions and Filtration Processes

The video tutorial demonstrates three experiments: the effect of temperature on solubility, evaporation of a solution, and filtration to separate insoluble impurities. It shows that solubility of sugar in water increases with temperature, evaporation leaves behind solute residue, and filtration separates mud from water.

What happens to sugar when it is added to water and stirred?

• It evaporates.

• It dissolves to form a solution.

• It sinks to the bottom.

• It forms a separate layer.

What is observed when the sugar solution is heated?

• The water evaporates immediately.

• The undissolved sugar dissolves.

• The sugar crystallizes.

• The sugar remains undissolved.

How does temperature affect the solubility of sugar in water?

• It increases solubility.

• It causes sugar to precipitate.

• It has no effect.

• It decreases solubility.

What is the residue left behind after the evaporation of a salt solution?

• Salt

• Mud

• Sugar

• Water

What is the purpose of heating a salt solution in the evaporation process?

• To dissolve more salt

• To separate salt from water

• To cool down the solution

• To increase the volume of water

What is the clear liquid collected after filtration called?

• Solvent

• Precipitate

• Filtrate

• Residue

What remains on the filter paper after filtration?

• Dissolved salt

• Insoluble residue

• Clear water

• Evaporated water

What is the role of the funnel in the filtration process?

• To dissolve impurities

• To hold the filter paper

• To heat the solution

• To evaporate water

Why is the filter paper moistened before use in filtration?

• To ensure it sticks to the funnel

• To dissolve impurities

• To prevent tearing

• To increase filtration speed

What is the main purpose of filtration in this experiment?

• To dissolve solutes

• To separate soluble substances

• To separate insoluble impurities

• To increase solubility