Combination of Methods

Q.

Identify solute and solvent in the following solutions :
(i) Aerated drinks
(ii) Tincture of iodine
(iii) Lemon water

State the principle of each of the following methods of separation of mixtures.
(i) Centrifugation method
(ii) Separation using separating funnel

[5 MARKS]

Q. Identify the correct example for the given method of separation.

1. Evaporation
2. Sublimation
3. Centrifugation

Q. You are given a mixture of sand, salt, water, and oil. Select the method of separation of each component, and the correct order of its usage from the given options.

1. Crystallisation, Centrifugation, Separating funnel
2. Filtration, Separating funnel, Crystallisation
3. Separating funnel, Crystallisation, Centrifugation
4. Filtration, Separating funnel, Centrifugation

Q. In the given sample, some salt is mixed with sand particles. How will you separate them?

1. Filtration followed by evaporation
2. Filtration followed by condensation
3. Sedimentation followed by evaporation
4. Evaporation followed by condensation

Q.

Which among the following methods is most suitable to separate a mixture of salt and ammonium chloride?

1. Filtration

2. Sublimation

3. Centrifugation

4. Separating funnel

Q. A mixture of powdered salt and sugar can be separated by the process of winnowing.

1. True
2. False

Q. Stones can be separated from a bowl of rice by _______.

1. Handpicking
2. Winnowing
3. Threshing
4. Sedimentation

Q. Salt is obtained from sea water by drying it in the sun. This process is known as ______.

1. filtration
2. evaporation
3. sedimentation
4. condensation

Q. You are given a mixture of sand, salt, water, and oil. Select the method of separation of each component, and the correct order of its usage from the given options.

1. Filtration, Separating funnel, Centrifugation
2. Filtration, Separating funnel, Crystallisation
3. Separating funnel, Crystallisation, Centrifugation
4. Crystallisation, Centrifugation, Separating funnel

Q. Identify a method used to separate a solid-solid mixture of silver and iron filings.

1. separating funnel
2. distillation
3. centrifugation
4. magnetic separation

Q.

What is the term used for "distillation of salt water to separate and collect both components?"

1. Fractionation

2. Sublimation

3. Desalination

4. Desolvation

Q. is the most suitable method to separate a mixture of salt and ammonium chloride.

1. Filtration
2. Sublimation
3. Centrifugation

Q.

_____ can be used to separate pebbles and stones from the sand.

1. Filter paper

2. Sieve

3. Magnet

4. Thresher

Q. The soild moth balls convert directly to and hence diminish over time. This phenomenon is known as .

1. evaporation
2. liquid
3. gas
4. sublimation

Q.

_____ can be used to separate pebbles and stones from the sand.

1. Filter paper

2. Thresher

3. Magnet

4. Sieve

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> A mixture of iron nails, salt, oil and water is provided to you. Give stepwise methods to separate each component from this mixture.

Q. is the most suitable method to separate a mixture of salt and ammonium chloride.

1. Filtration
2. Sublimation
3. Centrifugation