Advertisements
Advertisements
प्रश्न
Label the diagram and explain the process in your words.
उत्तर
- When filtration is carried out using a vacuum pump it is called filtration under suction. It is a faster and more efficient technique than simple filtration. The diagram is as follows:
Setup for filtration under suction - Procedure:
a. The assembly for filtration under suction consists of a thick wall conical flask with a sidearm (Buchner flask).
b. The flask is connected to a safety bottle by a rubber tube through the sidearm.
c. Buchner funnel (a special porcelain funnel with a porous circular bottom) is fitted on the conical flask with the help of a rubber cork.
d. A circular filter paper of correct size is placed on the circular porous bottom of the Buchner funnel and the funnel is placed on the flask.
e. Filter paper is moistened with a few drops of water or solvent.
f. Suction is created by starting the pump and filtration is carried out. - Crystals are collected on the filter paper and filtrate in the flask.
APPEARS IN
संबंधित प्रश्न
Give a brief description of the principle of the following technique taking an example.
Chromatography
Explain the principle of paper chromatography.
The best and latest technique for isolation, purification and separation of organic compounds is ______.
What is chromatography?
What are the advantages of chromatography?
Name the simplest type of chromatography?
On what principle is this method based?
Select the correct alternative from the choices given for the following statement:
In chromatography the filter paper is
Give a scientific reason.
In chromatography, the ingredients of a mixture rise up to limited height water rises up to the upper end of the paper.
State the correct technique for the separation of the following mixture.
solid constituents in a liquid constituent by adsorption.
Dyes of an ink
- Give the principle involved in the separation of the mixture
- Give the technique of separation of the mixture.
Choose the correct option.
Colourless components on chromatogram can not be observed by the following:
Give names of two materials used as stationary phase in chromatography.
Define the Stationary phase.
Name the different types of Chromatography and explain the principles underlying them.
Compare TLC and Paper Chromatography techniques.
Chromatography is based on the principle of ______.
The principle involved in paper chromatography is ______.
What is paper chromatography?
Paper chromatography is ______.
In chromatography technique, the purification of compound is independent of ______.
Which one of the following techniques is not used to spot components of a mixture separated on thin layer chromatographic plate?
In chromatography, which of the following statement is INCORRECT for Rf?
