Advertisements
Advertisements
प्रश्न
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
Advertisements
उत्तर
The method for separating a mixture of iron filings and sulphur powder, employs the use of carbon disulphide as a solvent followed by filtration and evaporation.
Sulphur dissolves in carbon disulphide, whereas iron does not. So, the solution will contain undissolved iron in it. This can then be filtered using a filter paper, where iron remains as residue and is collected on the filter paper. The filtrate obtained contains sulphur dissolved in it. On evaporating the solvent of the filtrate, we obtain sulphur.
APPEARS IN
संबंधित प्रश्न
Which one is a kind of matter:
Describe in your own words, what happens to the particles when salt dissolves in water.
Name one solid, one liquid and one gaseous non-metal.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Name a metal which has a low melting point.
The element which is not common between the compounds called baking soda and soda ash is
On the basis of composition of matter, milk is considered to be :
Which of the two will scatter light : soap solution or sugar solution ? Why ?
What is the most common way of expressing the concentration of a solution ?
State whether the following statement is true or false :
Bread is an example of solid foam.
What is a colloid ? Give two examples of colloids (or colloidal solutions)
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Name the process which can be used to recover salt from an aqueous salt solution.
How is cream separated from milk ?
Higher the temperature, the higher the kinetic energy of particles.
Define the term matter.
