What differences in the properties of oil and water enable their separation by a
separating funnel?
37. Name the process by which can be used to purify an impure sample of copper
sulphate.
38. Name the process by which the various 'dyes' (coloured materials) present in black ink
can be separated.
39. How will you separate a mixture of sodium chloride and sand?
40. How would you separate iodine from a mixture of iodine and common salt?
41. How will you separate a mixture of iron filings and powdered carbon?
Answers
36. They are immisible.
37. Crystallization.
38. Chromatography.
39. To separate salt {Sodium Chloride (NaCl)} and Sand,
FIRST,
Put water in the mixture and mix well
SECOND,
Remove sand from the water by seiving.
THIRD,
Evaporate water from salt solution.
FOURTH,
Hurry! You have successfully separated salt and sand!
40. Heat the solution and place a cork (if heating in beaker) or plate (if heating in any other utensil)
over it. The iodine will sublimate and salt will left.
Collect the iodine.
Hurry! Successful again!
41. Keep a magnet near the mixture. Iron fillings will stick to it.
Hurry! (You Know The Rest)
I hope it helps you....
Answer:
Explanation:
The differences in the properties of oil and water that enable their separation by separating funnel are:
I) Oil and water are immiscible liquids.
II) Oil and water have different densities.
Hope it helps you.