Advertisements
Advertisements
प्रश्न
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
Advertisements
उत्तर
Following steps are involved in separation of iron filings, chalk powder and common salt:
- At first, a magnet is moved on a mixture of iodine, iron fillings and salt. Due to the magnetic property of iron, iron fillings are separated by the magnet.
- As all the iron is removed, the mixture now contains iodine and salt. Iodine sublimes on heating but salt does not. So, on heating the mixture, we obtain the vapours of iodine.
- Vapours of iodine are condensed in a cold apparatus. Salt remains behind as residue. Therefore, the components of mixture get separated.
APPEARS IN
संबंधित प्रश्न
Solids have definite shape and definite volume.
What are the two conditions for the interconversion of states of matter ?
Define the following term of Matter .
Fill in the blank
Any matter which has a definite _______ but no definite shape is called a _______
Describe in your own words, what happens to the particles when salt dissolves in water.
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
Which of the two will scatter light : soap solution or sugar solution ? Why ?
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
Which of the following can be called a suspension ?
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
How will you separate a mixture containing sand and sugar ?
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Pure copper sulphate can be obtained from an impure sample by the process of :
Wipe the board with a duster and then tap the duster against the table. What do you see?
Define the term matter.
