Suspensions

Q.

Medicines that have the instructions 'shake the bottle well before use', are most likely

1. solutions

2. suspensions

3. colloids

4. alloys

Q.

Liquids and gases are called fluids because they cannot flow.

1. True
2. False

Q. The particles in a suspension are visible to the naked eye.

1. True
2. False

Q.

Name the technique used to separate

Two immiscible liquids

Q.

Give any three examples of separation of immiscible liquids using separating funnel.

Q.

What is one property of a suspension that is different from that of a solution or a colloid?

1. Particles cannot be seen in a suspension with a naked eye.

2. The particles of a suspension will settle out if left untouched.

3. A suspension is always clear.

4. Suspensions are colourless.

Q.

The particles in both a suspension and a colloid can ______.

1. settle down

2. scatter light

3. dissolve in the solvent

4. pass through a filter paper

Q. A student wants to prepare a solution of acetic acid and water having $30\%$ v/v. If $6mL$ of acetic acid has been taken then how much water must be added to get the desired concentration?

1. $20mL$ of water
2. $24mL$ of water
3. $14mL$ of water
4. $10mL$ of water

Q.

Which of the following is a suspension?

1. Muddy Water

2. Mist

3. Fog

4. Milk

Q.

The intermolecular space in a substance …………. with increasing intermolecular force.

Q.

Explain the method used to separate coconut oil and water?

Q.

Name the liquids which form separate layers when left undisturbed for sometime.

Q.

An unknown sample scatters light. When it is passed through a filter paper, it leaves some residue on the filter paper. The sample is most likely a

1. colloid

2. compound

3. solution

4. suspension

Q.

Suspensions are mixtures in which the particles eventually ___ because the particle sizes are so large.

1. dissolve

2. mix

3. settle

4. blend

Q.

Give an example of a mixture having two immiscible liquids. Suggest a suitable method to separate the components of these mixtures.

Q.

_______ have the intermediate inter-molecular space between the particles.

Q.

Fill in the blanks:

Separating funnel is used to separate _____ liquids.

Q.

Explain the differences between:

colloid and suspension

Q.

Complete the missing links:
Intermolecular space in solids is _______ than that of liquids.

Q.

4. The smallest intermolecular spaces are in liquids.

1. True
2. False

Q.

Choose the odd one out. Give reasons for the choice.

Sand in water, powdered chalk in water, Fog, Dust in air.

Q.

Define each of the following

Intermolecular space

Q.

Is the following statement correct?

Constituents of a mixture can be seperated by physical methods.

Q. When a beam of light is passed through a colloidal solution, it gets:

1. Reflected
2. Absorbed
3. Scattered

Q. Which of the following is not an example of a suspension?

1. Chalk powder + Water
2. Cement + Water
3. Mud + Water
4. Milk + Water

Q. What technique can be used to distinguish between a suspension and a colloid?

1. By freezing the mixture to a solid state.

2. By heating the mixture to boiling.

3. By illuminating them by a beam of light to observe scattering of light.

4. By shaking and observing the components if they separate.

Q.

Which of the following can be separated by filtration?

1. True Solution

2. Colloid

3. Suspension

4. Compound

Q.

A suspension is a ___ mixture in which very fine particles of solid are dispersed in any medium.

1. A supersaturated mixture in which very fine particles of solid are dispersed in any medium.

2. A unsaturated mixture in which very fine particles of solid are dispersed in any medium.

3. A heterogeneous mixture in which very fine particles of solid are dispersed in any medium.

4. A homogeneous mixture in which very fine particles of solid are dispersed in any medium.

Q.

Components of a suspension can be separated using a filter paper.

1. True

2. False