Chromatography

Q.

A colloid is a ______ mixture and its components can be separated by the technique known as ______.

Q.

What is chromatography ? For which type of mixture is it used?

Q.

In the chromatography technique, the purification of a compound is independent of:

1. Length of the column or TLC plate

2. Mobility or flow of solvent system

3. Physical state of the pure compound

4. Solubility of the compound

Q.

(a) What is chromatography ? For which type of mixture is it used ?

(b) What are the advantages of chromatography ?

(c) Give two applications of chromatography.

Q.

Give two applications of chromatography ?

Q.

Write the uses of paper chromatography?

Q.

What are the different types of chromatography?

Q.

Name the process by which all the dyes present in black ink can be recovered

Q.

Major process(es) involved in chromatography is/are:

1. Absorption

2. Adsorption

3. Absorption and partition

4. Adsorption and partition

Q.

The simple type of chromatography is named as ___ chromatography.

Q.

Write a note on paper chromatography.

Q. Arrange the steps followed for separation of colours in ink using paper chromatography.

1. Dot is marked
2. Dip in water
3. Water rises up
4. Colours get separated

Q. Four samples, P, Q, R, and S, were analysed using paper chromatography to check the presence of three different additives, X, Y, and Z.
The final chromatograms are shown as:

Read the following statements carefully.
I. P contains three components, out of which one is X.
II. S contains only one component, which is X.
III. Q contains two components, which are X and Z.
IV. R contains two components, out of which one is Y.
The correct statements are:

1. II and IV
   
   
   
2. I, II, III, and IV
3. I and III
4. I, II, and IV

Q.

Select the statement(s) that are related to Chromatography.

1. It is used to separate components of a mixture.

2. The rate of movement of components is the basis of separation.

3. It is used to separate colors in a dye.

4. It is used to separate drugs from blood.

Q. Which one of the following techniques is used to dry clothes in washing machine?

1. Distillation
2. Vaporisation
3. Filtration
4. Centrifugation

Q.

Which among the following methods is most suitable for the separation of dyes in black ink?

1. Chromatography

2. Sublimation

3. Filtration

4. Centrifugation

Q. Mixture can be separated, and kind of separation method depends on kind of:

1. mixure it is
2. solution it is
3. molecule it is
4. compound it is

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

Q.

Select the statement(s) that are related to Chromatography.

1. It is used to separate components of a mixture.

2. The rate of movement of components is the basis of separation.

3. It is used to separate colors in a dye.

4. It is used to separate drugs from blood.

Q.

Which of the following mixtures can be separated into its constituents using centrifugation?

1. Blood

2. Sugar water

3. Saltwater

4. Air

Q.

Fractional distillation refers to:

1. separation of mixture into its components

2. precipitation of components of a mixture

3. process of making homogeneous solution

4. process of making heterogeneous solutions

Q.

Which of the following mixtures can be separated into its constituents using centrifugation?

1. Sugar water

2. Saltwater

3. Blood

4. Air

Q.

• Define chromatography?

Q. Chlorophyll is a pigment present in leaves, which imparts green colour to them. Which of the following technique can be used to extract the green pigment from leaves?

1. Evaporation
2. Chromatography
3. Filtration
4. Crystallisation

Q. Explain the principle behind chromatography.

Q. Which separation techniques will you apply for the separation of the following?
a) Sodium chloride from its solution in water.
b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride.
c) Butter from curd.
d) Oil from water.

Q. Chromatography is used to separate:

1. Solutions
2. Mixtures
3. Different Molecules
4. Different atoms

Q. Silicon gel is used in:

1. spectroscopy
2. dating
3. none of the above
4. chromatography

Q.

Fractional distillation refers to:

1. precipitation of components of a mixture

2. process of making heterogeneous solutions

3. separation of mixture into its components

4. process of making homogeneous solution

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