Question

For the separation of red ink from blue ink a technique is used which is described below.

Arrange the statements in proper sequence:

(1) The blue and red ink form spots at certain distances on the paper.

(2) Paper chromatography is used for the separation.

(3) Paper and solvent are taken as stationary and mobile phases, respectively.

(4) A narrow strip of paper with a line drawn in a cut and a mixture of red and blue ink with the help of a capillary is placed on the line marked on the paper.

(5) The paper is suspended in the closed jar with the help of a hook.

• A. 2 4 3 5 1
• B. 2 5 3 1 4
• C. 2 3 4 5 1
• D. 1 4 5 3 2

Answer 1

The correct option is C

2 3 4 5 1

The technique used for the separation of red ink from blue ink is paper chromatography.

1. Paper chromatography is a technique used for the separation of a mixture based on its adsorption property.(2)
2. Paper and solvent are taken as stationary and mobile phases, respectively in the case of paper chromatography.(3)
3. A line is drawn at bottom of the paper strip and with the help of a capillary, the dots of the mixture is placed on the line drawn on the paper.(4)
4. The paper having dots of red and blue ink is placed on the paper and the paper is then placed in the jar containing solvent.(5)
5. The dots of the ink will move away from the drawn line and form spots at a certain distance from it.(1)

This method will follows the order 2 3 4 5 1

Therefore, option (c) is correct.