Tag: separation of substances

Questions Related to separation of substances

Vinegar is a solution of acetic acid in water, it is:

chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

  1. a homogeneous solid in liquid mixture

  2. a heterogeneous liquid in liquid mixture

  3. a homogeneous liquid in liquid mixture

  4. none of these

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Correct Option: C
Explanation:
Vinegar is homogenous solution because it is a completely uniform solution of liquid in liquid type of mixture (acetic acid in water)

The heterogeneous mixture of soot particles in air is a mixture of:

chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

  1. solid-in-solid

  2. solid-in-gas

  3. gas-in-solid

  4. gas-in-gas

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Correct Option: B

Unlike gases, can all liquids in liquid mixtures form solutions.

chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

  1. True

  2. False

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Correct Option: B
Explanation:

No, not all liquids in liquids mixture form solutions

we know that "like dissolve like", so, the liquids which have same polarity only form solutions.
for example: water and oil have different polarity and hence they do not form solution.

Match the column I with column II and select the correct option from the codes given :


Column I                       Column II

P. Chalk-water mixture     (i) A gaseous mixture
Q. Glucose solution          (ii) A solid-gas mixture
R. Fizzy drink                    (iii) A homogeneous solid-liquid mixture
S. Smoke                          (iv) A solid-liquid mixture
T. Air                                 (v) A gas-liquid mixture

chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

  1. P-(iii), Q-(iv), R-(v), S-(i), T-(ii)

  2. P- (v), Q- (iii), R- (iv), S- (ii), T-(i)

  3. P-(ii), Q-(i), R-(iv), S- (v), T- (iii)

  4. P-( iv), Q- (iii), R- (v), S-(ii), T-(i)

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Correct Option: D
Explanation:
Chalk-water mixture- A heterogeneous solid-liquid mixture

Glucose solution- A homogeneous solid-liquid mixture

Fizzy drink- A gas-liquid mixture

Smoke - A solid-gas mixture

Air - A gaseous mixture

Hence the correct option is D.

Which pair is a miscible liquid mixture?

chemistry separation of substances substances and mixtures formation of mixtures and types of mixtures based on states types of mixtures

  1. Ethylalcohol and water

  2. Mercury and alcohol

  3. Benzene and water

  4. Carbondisulphide and water

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Correct Option: A
Explanation:
Water is polar and has hydrogen bonding. Since, ethyl alcohol has oxygen atom it also undergoes hydrogen bonding when mixed with water. Also, ethyl alcohol is polar due to high electro-negativity of $O$, due to which it mixes with water. Hence, ethyl alcohol and water are a pair of miscible liquid mixture. 

A salt is made by adding an excess of an insoluble metal oxide to an acid. How is the excess metal oxide removed from the mixture?

chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

  1. chromatography

  2. crystallisation

  3. distillation

  4. filtration

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Correct Option: D
Explanation:
$\text{Filtration is defined as the process of separating suspended solid matter from a liquid.}$$\text{ So it can be used to remove metal oxide from the mixture.}$

State True or False.
A mixture can not be represented by a chemical formula.

chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

  1. True

  2. False

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Correct Option: A
Explanation:

In chemistry, a mixture is a material system made up of two or more different substances which are mixed but are not combined chemically. A mixture refers to the physical combination of two or more substances on which the identities are retained and are mixed in the form of solutions, suspensions, and colloids.

Example of  a 'solid in liquid' mixture is :

chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

  1. oil in water

  2. muddy water

  3. smoke

  4. all of these

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Correct Option: B
Explanation:

 Phases of matter   Name of mixture  Examples
 Liquid - liquid  Emulsion  Oil in water
 Solid - liquid  Suspension  Muddy water
 Gas - liquid  Aerosol  Fizzy drinks
 gas - solid  Smoke  Smog

A mixture is a combination of two or more substances, where these substances are not bonded (or joined) to each other and no chemical reaction occurs between the substances.

Pick out the mixture from the following.

chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

  1. Water

  2. Oxygen

  3. Carbon dioxide

  4. Air

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Correct Option: D
Explanation:

Air is a mixture of gases in the atmosphere. Water is a compound, oxygen $(O _2)$is a molecule and carbon dioxide is also a compound.


Option $(D)$ is correct .

We separate mixtures to :

chemistry separation of substances mixtures: examples and properties types of solutions all about mixtures

  1. remove unwanted components

  2. to get pure substances

  3. Both of the above

  4. None of the above

Show answer
Correct Option: C
Explanation:

We separate mixture to remove the unwanted components and to get pure substances.