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प्रश्न
Name the process by which all the dye can be recovered from black ink.
उत्तर
The process of evaporation can be used to recover all the dye from black ink.
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संबंधित प्रश्न
Define the term matter. What is it composed of?
Name the processes involved in two cases.
Name two processes which provide the best evidence for the motion of particles in matter.
Define matter. Give four examples of matter.
The best evidence for the existence and movement of particles in liquids was provided by :
What is meant by saying that metals are malleable and ductile ?
What is meant by saying that metals are lustrous ?
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Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
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Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
What is the difference between solutions and colloids ?
One of the following represents the solution of solid in a solid. This one is :
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
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Name the process which can be used to recover salt from an aqueous salt solution.
How will you separate a mixture of iron filings and powdered carbon ?
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
Name the metals that are used in jewellery.
