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प्रश्न
The dyes present in fountain pen ink can be separated by the technique of :
पर्याय
fractional distillation
infrared photography
crystallisation
chromatography
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उत्तर
chromatography
Chromatography is the technique used to separate the contents of a mixture, where solute particles are in extremely small quantity.
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संबंधित प्रश्न
Define the term matter. What is it composed of?
What are the two conditions for the interconversion of states of matter ?
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
Out of solids, liquids and gases, which one has :
- maximum movement of particles ?
- maximum interparticle attractions ?
- minimum spaces between particles ?
When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own, even without stirring. This is an example of :
What is meant by saying that metals are sonorous ?
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
Name a metal which has no fixed shape.
Draw a flow-chart for the schematic representation of different types of matter.
Which of the following is not an element ?
State whether the following statement is true or false :
Bread is an example of solid foam.
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
Describe a method to separate a mixture of common salt and sand.
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
Justify your answer.
| Figure 1 | Figure 2 | Figure 3 |
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 |
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The arrangement of particles in three different phases of matter is shown above.
- Which state is represented by Fig. 1?
- In which state will the inter-particle attraction be maximum?
- Which one of them cannot be contained in an open vessel?
- Which one can take the shape of its container?
Liquids cannot be compressed and they have fixed volume.
The fluidity of solids: ______.
