Question

Which of the following statements defines 'chromatography'?

1. It is the process of separation of components of a mixture.

2. It is used to separate colours in a dye.

3. It is used to separate a mixture of oil and water.

Select the correct answer using the codes given below.

1. 1 and 2
2.  3 only
3. 2 and 3
4. 2 only

Answer 1

Correct Answer - Option 1 : 1 and 2

The correct answer is 1 and 2.

• Chromatography
  • Chromatography, a technique for separating the components, or solutes, of a mixture on the basis of the relative amounts of each solute distributed between a moving fluid stream, called the mobile phase, and a contiguous stationary phase.
  • It is also used to separate colours in a dye
  • The mobile phase may be either a liquid or a gas, while the stationary phase is either a solid or a liquid.

• Chromatography has numerous applications in biological and chemical fields.
• It is widely used in biochemical research for the separation and identification of chemical compounds of biological origin.
• In the petroleum industry, the technique is employed to analyze complex mixtures of hydrocarbons.
• Chromatographic methods are classified according to the following criteria:
  • The geometry of the system
  • mode of operation
  • retention mechanism
  • phases involved.