Advertisements
Advertisements
प्रश्न
What is chromatography ? State its two applications.
Advertisements
उत्तर
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
संबंधित प्रश्न
The molecules can move freely anywhere in
Define the term matter. What is it composed of?
Give one difference between atoms and molecules.
All kinds of matter
State two physical properties on the basis of which metals can be distinguished from non-metals.
The property/properties which enable copper metal to be used for making electric wires is/are :
Out of a colloid, solution and a suspension :
which one has the largest particles ?
State whether colloidal solutions are homogeneous or heterogeneous.
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
A carpenter wants to separate iron nails from saw-dust. Which method of separation should he choose ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How will you separate a mixture of common salt, sulphur powder and sand ?
How will you separate water from mustard oil ?
Explain how, nitrogen , oxygen and argon gases are separated from air.
The dyes present in fountain pen ink can be separated by the technique of :
The best way to recover sugar from an aqueous sugar solution is :
What type of matter glass is?
The most reactive metal is ______.
Gases change to liquid by the process of ______.
