A. Answer the following in one word or one sentence.
1. Which method can be used to separate a mixture of naphthalene and common salt?
2. Name the process you would use to separate a mixture of two miscible liquids (like acetone
and water).
3. What difference in the property of two miscible liquids enables their separation by
fractional distillation?
4. Name one pair of substances whose mixture can be separated by fractional distillation.
5. Name one pair of liquids which can be separated by using a separating funnel.
6.Name any two solid substances whose mixture can be separated by sublimation.
7 Name one pair of substances whose mixture can be separated completely by distillation.
8.How will you separate a mixture of chalk powder and water?
9. Name the process which can be used to separate a mixture of salt solution and sand.
10. Name the process you would use to separate a mixture of water and alcohol.
11. Name the apparatus you would use to separate oil from water.
12. What differences in the properties of oil and water enable their separation by a separatingby a funnel?
13. Name the process by which the various 'dyes' present in black ink can be separated.
Answers
Explanation:
1..... sublimation
2....fractional distillation
3.... difference in the boiling points
4....acetone and water
5....oil and water
6....ammonium chloride and camphor
7....chloroform and ethanol
8....filtration
9....mix salt and sand with water.salt get dissolved in water and sand remains same.sand seperated By the process of filtration. water and salt remain in beaker by evaporation water evaporated and salt remains.
10....fractional distillation
11.....separating funnel
12....the mixture of oil and water forms two separate layersbecause they are completely insoluble in each other.oil forms upper layer and water in down.when two layers stable then they separated by separating funnel
13....chromatography
Explanation:
(i) Mixture of sand and husk: Sand and husk can be separated by the method of winnowing.
(ii) Mixture of wheat, sugar and silk: For separating silk from the mixture we should follow the winnowing method because silk is lighter than other two components and get separated. Wheat and sugar can be separated by sieving because they are in different sizes.
(iii) Mixture of water and petrol: Water does not dissolve in petrol. So, it can be separated by the use of separating funnel.
(iv) Mixture of rice and salt: Rice and salt can be separated by sieving.
(v) Mixture of sand and salt: Sand and salt is mixed with water, salt dissolves in water and sand can be separated solution by sedimentation and decantation followed by filtration. After that using evaporation common salt is separated.
plzz mark me as brainlist