Answer :

(a) Mercury and water are separated by using a separating funnel.

Mercury and water are two immiscible liquids having different densities. Thus they are separated by the process of decantation* using separating funnel. Mercury is heavier than water, thus forms the lower layer and is separated from water.
2-10-1
*Decantation: It is a process in which the mixtures are. This separation is done by removing a layer of liquid in which a precipitate has settled.


(b) Potassium chloride and ammonium chloride are separated by sublimation because ammonium chloride sublimes (i.e. changes into vapours) leaving behind the potassium chloride. Sublimation is the process in which solid changes directly into vapours on heating and vapours change into solid on cooling without going in liquid state.
2-10-2


(c) Common salt, water and sand are separated by (i) decantation (or filtration) (ii) evaporation Decantation (or filtration) is used to separate sand from common salt solution in
water. Common salt is soluble in water whereas sand is insoluble in water. Therefore, sand is separated as residue and filtrate is a common salt solution in water.
2-10-3-1



(ii) Evaporation is used to separate common salt from water. Water evaporates and common salt remains as residue.
2-10-3-2


(d) Separation of kerosene oil from salt solution is done by using separating funnel to separate kerosene oil followed by evaporation or distillation.
(i) Decantation separates kerosene oil from salt solution in water as these are immiscible and form separate layers.
(ii) Evaporation is used to separate salt from water (as shown above).


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Mixture & SolutionMixture & SolutionMixture & Solution38 mins
Are Elements and Compounds Types of Molecules?Are Elements and Compounds Types of Molecules?Are Elements and Compounds Types of Molecules?34 mins
Learn 5 Solid-liquid Mixture Separation Techniques!Learn 5 Solid-liquid Mixture Separation Techniques!Learn 5 Solid-liquid Mixture Separation Techniques!36 mins
Master NCERT Activities and Questions Based on ThemMaster NCERT Activities and Questions Based on ThemMaster NCERT Activities and Questions Based on Them47 mins
More on Mixture & SolutionMore on Mixture & SolutionMore on Mixture & Solution31 mins
NCERT Exemplar | Is Matter Around Us PureNCERT Exemplar | Is Matter Around Us PureNCERT Exemplar | Is Matter Around Us Pure53 mins
How to Distinguish Between Suspensions and Colloids??How to Distinguish Between Suspensions and Colloids??How to Distinguish Between Suspensions and Colloids??25 mins
Genius Quiz | Test Your Knowledge on Separation TechniquesGenius Quiz | Test Your Knowledge on Separation TechniquesGenius Quiz | Test Your Knowledge on Separation Techniques38 mins
Smart Revision | Let's Revise Is Matter Around us Pure?Smart Revision | Let's Revise Is Matter Around us Pure?Smart Revision | Let's Revise Is Matter Around us Pure?34 mins
Champ Quiz | About Colloidal SolutionChamp Quiz | About Colloidal SolutionChamp Quiz | About Colloidal Solution30 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

What is the need Together with Science

Pure copper sulphLakhmir Singh & Manjit Kaur - Chemistry

How will you sepaLakhmir Singh & Manjit Kaur - Chemistry

Describe a methodLakhmir Singh & Manjit Kaur - Chemistry

How will you sepaLakhmir Singh & Manjit Kaur - Chemistry

You are provided NCERT Science - Exemplar

Which separation Together with Science

How would you obtLakhmir Singh & Manjit Kaur - Chemistry

You are given a mLakhmir Singh & Manjit Kaur - Chemistry