Distillation and Liquation

Q.

The content of carbon in pig iron is

1. 2%

2. 3%

3. 6%

4. 4%

Q.

Nickel is refined by

1. Mond process

2. Liquation

3. Zone refining

4. Van Arkel method

Q.

Which method is used to refine impure metals?

Q. Which of the following statement(s) is/are correct?

1. Distillation is used to seperate two mixtures based on their difference in relative densities.
2. In fractional distillation vapours of the liquid mixture are passed through a fractionating column before condensation.
3. Distillation is used to seperate two mixtures based on their difference in their boiling points.
4. In fractional distillation vapours of the liquid mixture are passed through a fractionating column after condensation.

Q. What Is Gold Number? How to solve numericals of gold number?

Q. Identify the methods by which the individual components of a mixture containing water, sodium chloride, ethanol and benzene can be separated.

1. Separating funnel, fractional distillation, evaporation
2. Fractional distillation, distillation, crystallisation
3. Separating funnel, fractional distillation, filtration, distillation
4. Separating funnel, fractional distillation, sedimentation and decantation

Q. The correct match between items of List-I and List-II is :

	List - I		List - II
(a)	Coloured impurity	(p)	Steam distribution
(b)	Mixture of o-nitrophenol and p-nitrophenol	(q)	Fractional distribution
(c)	Crude Naphtha	(r)	Charcoal treatment
(d)	Mixture of glycerol and sugars	(s)	Distillation under reduced pressure

1. (A)-(R), (B)-(S), (C)-(P), (D)-(Q)
2. (a)- (r), (b)-(p), (c)-(s), (d)-(q)
3. (a)-(r), (b)-(p), (c)-(q), (d)-(s)
4. (a)-(p), (b)-(s), (c)-(r), (d)-(q)

Q. Iron can be purified by the method of liquation.

1. True
2. False

Q.

Sir can u please give me a list of metallurgical processes and elements or list of road related to them

Q. Which of the following metal commercially reduced by carbon reduction method only and refined by distillation method

Q. Name the method that is used for refining of nickel.

Q.

The iron which is obtained from blast furnace is

1. Pig iron

2. Hard iron

3. Wrought iron

4. Cast iron

Q.

Discuss the techniques of distillation.

Q. Choose the correct statement(s) regarding distillation:

1. The compositions of the liquid and the vapour that are in mutual equilibrium are same.
2. In condensate, there is higher mole fraction of the less volatile component
3. The vapour should be richer in the more volatile component
4. In fractional distillation, the boiling and condensation cycle is repeated successively to get a distillate.
   

Q. Assertion :The constituents of petroleum can be separated using fractional distillation. Reason: Fractional distillation is a method for separating heterogeneous liquid mixtures.

1. Assertion and reason both are correct statements and reason is the correct explanation for assertion.
2. Assertion and reason both are correct statements but the reason is not the correct explanation for assertion.
3. Assertion is correct statement but reason is wrong statement.
4. Assertion and reason both are wrong statements

Q. If the constituents of a solid-liquid mixture have different masses, then we can separate them using:

1. centrifugation
2. sublimation
3. winnowing
4. evaporation

Q.

1. True
2. False

Q. A mixture of oil and water can be separated by using ?

Q.

State a method to separate a solid-liquid mixture containing a soluble solid in the liquid components.

1. Fraction distillation
2. Filtration
3. Sedimentation
4. Distillation

Q. Match the refining methods (Column I) with metals (Column II).

	Column I (Refining methods)		Column II (Metals)
(I)	Liquation	(a)	Zr
(II)	Zone Refining	(b)	Ni
(III)	Mond Process	(c)	Sn
(IV)	Van Arkel Method	(d)	Ga

1. (I) - (b); (II) - (c); (III) - (d); (IV) - (a)
2. (I) - (b); (II) - (d); (III) - (a); (IV) - (c)
3. (I) - (c); (II) - (d); (III) - (b); (IV) - (a)
4. (I) - (c); (II) - (a); (III) - (b); (IV) - (d)

Q. Choose the correct statement(s) regarding distillation:

1. The compositions of the liquid and the vapour that are in mutual equilibrium are same.
2. In condensate, there is higher mole fraction of the less volatile component
3. In fractional distillation, the boiling and condensation cycle is repeated successively to get a distillate.
   
4. The vapour should be richer in the more volatile component

Q. Metals that are refined by liquation are:

1. Sn
2. Bi
3. Pb
4. Si

Q.

Arrange the following steps in a proper sequence for the separation of a mixture of water and alcohol.

(A) The mixture is heated.

(B) The condensed liquid is collected in the receiver flask.

(C) The mixture is taken in the distillation flask.

(D) The component with a lower boiling point vaporizes first.

1. ACDB

2. CADB

3. CABD

4. ACBD

Q. Assertion :Lead, tin and bismuth are purified by liquation method. Reason: Lead, tin and bismuth have low m.p. as compared to impurities.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Assertion is incorrect and Reason is correct

Q. A mixture of sand and salt can be separated by:

1. Sieving
2. Dissolving salt and sand mixture in water and then filtration
3. Sublimation
4. Dissolving salt in water and then distillation

Q.

Describe giving reasons the kind of mixtures that can be separated by the distillation.

Q.

Write short note on following:

Fractional distillation

Q. Choose the correct statement(s) regarding distillation:

1. The compositions of the liquid and the vapour that are in mutual equilibrium are same.
2. In condensate, there is higher mole fraction of the less volatile component
3. The vapour should be richer in the more volatile component
4. All of the above.

Q. explain copper extraction

Q. Liquation process is used for the concentration of which ore?

1. Tinstone
2. Haematite
3. Limestone
4. Stibinite