Distillation

Q. How can we separate sugar and salt?

Q. What is the process to separate the mixture of ethyl alcohol and water?

Q.

How will you separate a mixture containing kerosene and petrol (the difference in their boiling points is more than$25º\mathrm{C}$), which are miscible with each other?

Q.

Is distilled water a mixture?

Q. Question 3 (a)
Give reason for the following observations.
a. Naphthalene balls disappear with time without leaving any solid.

Q.

Which of the following is steam volatile?

1. Phenol

2. o-Nitrophenol

3. m-Nitrophenol

4. p-Nitrophenol

Q.

Why chilled ethanol is used during the isolation of the desired gene?

Q.

what types of liquids can be separated through distillation

Q.

Explain the process of separating oil and water using separating funnel.

Q.

Which metals are purified using the method of distillation?

Q. Which method is used to separate a mixture of kerosene and petrol?

1. Distillation
2. Sublimation
3. Separating funnel
4. Evaporation

Q.

Which one of the following mixtures can be separated into pure components by fractional distillation?

1. Water-hydrochloric acid.

2. Benzene-toluene

3. Water-ethyl alcohol

4. Water-nitric acid

Q.

Which of the following techniques can be used to separate a soluble solid and a liquid?

a. Evaporation

b. Filtration

c. Distillation

1. Only a

2. Only c

3. Only b

4. Both a and c

Q.

What is the correct order of the below mentioned units in water purification system? 1) Chlorination tank 2) Loading tank 3) Sedimentation tank 4) Filtration tank

1. 1, 3, 4, 2

2. 1, 2, 3, 4

3. 4, 3, 2, 1

4. 3, 2, 4, 1

Q.

What is the shape of funnel?

Q. What is the important role of a condenser in the distillation of a salt solution?

1. It cools the water vapour.
2. It changes the water vapour into liquid.
3. It changes the water vapour into solid.
4. It increases the temperature of the solution.

Q.

Water and carbon tetrachloride are immiscible liquids.

1. True

2. False

Q.

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 ?

(a) evaporation (b) simple distillation (c) fractional distillation (d) crystallisation

Q.

Name the metal which can be purified by the distillation process.

Q.

Which of the following apparatus are used during the distillation process ?

1. Thermometer

2. Water Condenser

3. Bunsen burner

4. Burette

Q. Question 1
How will you separate a mixture containing kerosene and petrol (difference in their boiling points is more than ${25}^{\circ }C$), which are miscible with each other?

Q. Distillation can be used to separate a homogeneous mixture of solid and liquid.

1. True
2. False

Q. Question 11
Which of the tubes in Figure (a) and (b) will be more effective as a condenser in the distillation apparatus?
​​​​​​​

Q.

Name the process you would use to separate a mixture of two miscible liquids (like acetone and water).

Q. Fractional distillation is used to separate immiscible liquids.

1. False
2. True

Q.

___________ is the method of separation of components of a mixture containing two miscible liquids that boil without decomposition and have sufficient difference in their boiling points.

1. Crystallisation

2. Filtration

3. Decomposition

4. Distillation

Q.

Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.

(a) What could X be ?

(b) What could Y be ?

(c) Name the process Z.

(d) Which process would you use to recover both the components X and Y from tincture of iodine ?

(e) Which process can be used to recover only component Y from tincture of iodine ?

Q.

Name one pair of substances whose mixture can be separated completely by distillation.

Q.

Find the odd one out. Give a reason for your answer.

Winnowing, decantation. filtration and distillation.

Q. The mixture of two miscible liquids (acetone and methanol) cannot be separated out by simple distillation because:

1. They decompose and form other compounds.
2. Difference in their boiling points is not greater than ${25}^{\circ }C$.
3. Difference in their boiling points is greater than ${25}^{\circ }C$.
4. Both of them sublime at a very low temperature.