Chromatography

Q.

A mixture of camphor and benzoic acid can be easily separated by

1. fractional distillation

2. sublimation

3. extraction with a solvent

4. chemical method

Q.

What is mobile phase (in paper chromatography)?

Q.

The principle involved in paper chromatography is ______.

Q.

What kind of mixtures can be separated by chromatography?

Q.

What is chromatography? How will you separate the components of black ink using chromatography?

Q.

Name the process which is used to separate the colours in a dye.

1. Evaporation

2. Magnetic separation

3. Chromatography

4. Distillation

Q.

What is the method or technique used for separating components of a mixture based on the tendency of each component to travel across the surface of another material?

1. pH indicator

2. Distillator

3. Chromatography

4. None of the choices

Q.

The word chromatography is derived from a greek word, 'kroma' which means colour. Select the statements that refer to chromatography.

1. It is used to separate components of a mixture

2. In this technique, rate of movement of components aids the separation of the constituents

3. It is used to separate colours in a dye

4. It is used to separate drugs from blood

Q.

Components of an ink can be separated by:

1. Chromatography

2. evaporation

3. filtration

4. sublimation

Q.

Give 2 example for which the chromatography technique can be use.

Q.

Which separation technique will you apply for the separation of the following?

Different components of the ink

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What is chromatography? How does solubility affect chromatography?

Q.

What is paper chromatography? How is it useful?

Q.

What is chromatography? State two of its applications

Q.

Explain the principle of chromatography.

Q. Define chromatography. Explain the underlying principle involved .

Q.

How will you detect the traces of poison present in the stomach wash of a person?

Q. Reena drops a filter paper with different ink marking into a beaker containing water as shown in the figure. Which of the following can be observed and inferred after some time?

1. After some time the spots level arises
2. All the ink spots move up at the same speed
3. All the ink spots attains the same height
4. All the ink spots move up at different speeds

Q.

What is paper chromatography?

Q. _____ is based on the difference in the solubility of different components of a mixture with a solvent.

1. Filtration
2. Sublimation
3. Crystallization
4. Chromatography

Q.

One drop of ink is added to 1000 ml of water and mixed thoroughly using spoon.
Choose the correct option about the contents of the beaker after the spoon is removed.

1. The beaker doesn't have any particles of ink anymore.

2. The beaker still has the ink particles that were added in it.

3. Some of the ink particles vanish and only few of them are present in the beaker.
4. All the particles of ink will be stuck to the spoon.

Q. A mixture of camphor and benzoic acid can be easily separated by?

1. Sublimation
2. Fractional distillation
3. Chemical method
4. Extraction with solvents

Q. Chromatography is used :

1. for testing the purification of drinking water
2. in pharmacy for detecting the chiral compounds
3. in the food industry
4. all of these

Q. In chromatography the filter paper is :​

Q.

___ is based on the difference in rates of adsorption of different substances on the surface of a suitable adsorbent.

Q. The separation of the constituents of a mixture by column chromatography depend upon their

1. different solubilities
2. different boiling points
3. different reactive indices
4. differential adsorption

Q. Assertion :Moving phase is liquid and stationary phase is solid in paper chromatography. Reason: Paper chromatography is used for analysis of polar organic compounds.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is incorrect but Reason is correct
4. Both Assertion and Reason are incorrect

Q. What are the advantages of chromatography.

Q. Assertion :A mixture of plant pigments can be separated by chromatography. Reason: Chromatography is used for the separation of coloured substances into individual components.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect