Advertisements
Advertisements
Question
Describe a method to separate a mixture of camphor and sand.
Advertisements
Solution
Sublimation method is used to separate a mixture of camphor and sand. Camphor is a volatile solid and can be separated from any other non-volatile substance by heating. Sand is a non-volatile substance. When a mixture of sand and camphor is heated, sand will remain in the container but camphor will vaporise. These vapours are collected and condensed on a cold surface.
APPEARS IN
RELATED QUESTIONS
Define matter.
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
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?
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
Name a metal which can be easily cut with a knife.
Which of the following are not compounds ?
Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
If 25 mL of acetone is present in 150 mL of its aqueous solution, calculate the concentration of solution.
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Which of the following do not exhibit Tyndall effect ?
Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
How is scrap iron separated from a heap of waste materials in factories?
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 ?
______ is a smallest particle.
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
