Advertisements
Advertisements
प्रश्न
Discuss the method of separating a mixture containing chalk powder, iron filings and naphthalene.
उत्तर
The method of separating a mixture containing chalk powder, iron filings and naphthalene employs the use of a magnet followed by sublimation. At first, a magnet is moved over the mixture. Iron fillings are attracted by the magnet and get separated. Then the chalk powder and naphthalene are separated by sublimation. In this process, the mixture of chalk powder and naphthalene is heated. Naphthalene sublimes on heating, and its vapours are condensed over a cold apparatus. Chalk powder, being nonvolatile, is left behind as residue.
APPEARS IN
संबंधित प्रश्न
Compare the properties of metals and non-metals with respect to
- alleability
- ductility
- electrical conductivity.
Name the property of any one of the components which can be used for separating the following mixture :
Salt and Camphor
How will you separate a mixture of cooking oil (groundnut oil) and water ?
Which of the following can be separated by using a separating funnel and which cannot be separated by using a separating funnel ?
- water and kerosene mixture
- water and acetone mixture
Give reasons for your answer.
Give two examples of the following type of mixture.
liquid-gas
Give one example of the following type of mixture.
Solid-liquid homogeneous mixture
Give reasons for the following:
Naphthalene and camphor cannot be separated by sublimation.
State what information is provided by the formula of calcium hydroxide – Ca(OH)2
The constituents that form a mixture are also called ______.
LPG is ______ gas.
