Advertisements
Advertisements
Question
What is chromatography ? State its two applications.
Advertisements
Solution
Chromatography is a technique used for separating two or more dissolved solids, which are present in the solution in small quantities.
Separation is based on the fact that two or more substances are soluble in the solvent but their solubility is different.
This technique has various important applications:
- To separate dyes present in black ink
- It is used in forensic science to detect and identify the trace amounts of poison present in the stomach.
APPEARS IN
RELATED QUESTIONS
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Which one is a kind of matter:
Bromine and air take about 15 minutes to diffuse completely but bromine diffuses into a vacuum very rapidly. Why is this so?
Name a liquid which can be classified as a pure substance and conducts electricity.
Which type of elements, metals or non-metals, show the property of brittleness ?
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Give reason why copper metal is used for making electric wires.
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
One of the following represents the solution of solid in a solid. This one is :
State whether the following statement are true or false :
Salt and water can be recovered from an aqueous salt solution by the process of evaporation.
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process by which common salt is obtained from sea-water.
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
Which one of the following scrap metal cannot be separated by magnetic separation ?
Gases change to liquid by the process of ______.
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
Define the term matter.
