Magnetic Separation

Q.

The removal of iron nails from a pile of dust can be achieved by the process of ___.

1. Decantation

2. Threshing

3. Sieving

4. Sedimentation

Q. Identify the best way to separate a mixture of sulphur and iron filings.

1. Distillation
2. Separating funnel​
3. Magnetic separation
4. Centrifugation​

Q.

Explain-CCl₄ is insoluble in water.

Q.

A mixture of iron powder and sulphur powder can be separated by:

1. Threshing

2. Sieving

3. Handpicking

4. Magnetic separation

Q. How can we separate iron powder from aluminium powder in a mixture?

1. Filter paper
2. Funnel
3. Magnet
4. Sieve

Q.

Name the method used for the separation of iron pins from sand.

Q. Which of the following components can be separated by using a magnet?

1. Salt and sand

2. Mercury and sugar

3. Mercury and copper sulphate

4. Iron particles and sand

Q.

Which of the following mixture cannot be separated by using a magnet?

1. a mixture of iron filings and table salt

2. a mixture of powdered sugar and iron filings

3. a mixture of aluminium powder and iron filings

4. a mixture of powdered sugar and sulphur

Q.

Explain the method of separating iron filings, naphthalene and chalk powder.

Q.

How is sugar recovered from sugar solution? Explain.

Q.

4. Iron sulphide would get attracted to a nearby magnet.

1. True
2. False

Q. Concrete is a/an ___ of water, sand, cement and other rocks grinded together.

1. element
2. homogeneous mixture
3. compound
4. heterogeneous mixture

Q.

In a workshop, there is a mixture of iron powder and aluminum powder that fabricates metal door and gates. The worker has to separate the aluminum powder from the iron powder so that the powders can be utilized for other functions. What method should the worker use in order to separate the mixture?

1. Magnetic separation

2. Handpicking

3. Threshing

4. Sieving

Q. Iron sulphide is not attracted towards magnet whereas its element is attracted towards magnet why?

1. Properties of compound are similar to the properties of its constituents
2. Compounds are made up of mixtures
3. None of above
4. Properties of compound are different to the properties of its constituents

Q.

Mixture of common salt and water can be separated completely by the process of :

1. evaporation

2. distillation

3. filtration

4. dissolving in more water

Q. The various methods for separation of solid-solid mixture includes:

1. leaching
2. centrifuge
3. magnetic separation
4. fractional distillation

Q.

Identify the mixture which can be separated by magnetic separation method.

1. chalk powder + sand

2. iron + sand

3. common salt + sand

4. sulphur + sand

Q. Select the correct statement(s):

1. Gravity separation method is used in concentration of oxide ore and carbonate ore
2. Magnetic separation method is used for separation of non - magnetic rutile and magnetic impurity of chlorapatite
3. $F{e}_3{O}_4$ is magnetic and impurities non - magnetic
4. $Mn{O}_2$ is non - magnetic and impurities magnetic

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

1. Magnetic separation
2. Centrifugation
3. Sublimation
4. Crystallization

Q. Concrete is a/an ___ of water, sand, cement and other rocks grinded together.

1. compound
2. heterogeneous mixture
3. homogeneous mixture
4. element

Q. How to separate a mixture of iron and sulphur?

Q.

Write the properties of these substances.

Water, glass, chalk, iron ball, sugar, salt, flour, coal, soil, pen, ink, soap.

Q. A very large quantity of mixture contains tiny particles of three different substances X, Y, and Z. They are of the same size, cubical in. shape and yellow in color. X particles are very heavy, insoluble, non-magnetic and contribute $50\%$ of the mixture. Y particles are very light, insoluble, non-magnetic and contribute $40\%$ of the mixture. And Z particles are actually iron pieces. Which of the following methods can separate X, Y, and Z in the fastest manner?

1. Winnowing-Magnetic separation
2. Magnetic separation-Winnowing
3. Sieving-Magnetic separation Filtration
4. Handpicking - Sublimation-Sieving

Q. Separation of iron from a mixture of iron and copper filing can be achieved by ____________.

1. sublimation
2. crystallisation
3. magnetic separation
4. filtration

Q.

The constituents of a mixture of ${\mathrm{CaCO}}_3$ and $\mathrm{NaCl}$ is separated by:

1. Using evaporation method

2. Using the sublimation method

3. Dissolving in water, filtration, and evaporation

4. Uisng the distillation method

Q. ___________technique is used to separate scrap-iron from other wastes in the scrap yard.

1. Handpicking
2. Winnowing
3. Magnetic separation
4. Sieving

Q. Iron and sulphur

1. filtration
2. distillation
3. magnetic
4. chromatography

Q. Magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a:

1. Frictional force
2. Gravitational force
3. Both a and b
4. Magnetic force

Q. Iron and brass paper clips can be separated from each other by

1. Magnetic separation
2. Chromatography
3. Centrifugation
4. All of above

Q. Which of the following method is used for separation of gangue from haematite ore?

1. Filtration
2. Chromatography
3. Crystallisation
4. Magnetic separation