Tag: different types of mixtures

Questions Related to different types of mixtures

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

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about 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 the above

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Correct Option: C
Explanation:

Vinegar is a solution of acetic acid in water.It is a homogenous liquid in  liquid mixture.


The metals present in brass are___and____.

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Iron, Zinc

  2. Copper, Tin

  3. Copper, Zinc

  4. Aluminium, Magnesium

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Correct Option: C
Explanation:

Brass consists of two elements: Copper and Zinc. The ratios of these can vary greatly; however, they are a solid mixture and are homogeneous. 

Which of the following mixtures will be the most difficult to separate?

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Iron filings + sand

  2. Sand + water

  3. Saw dust + stones

  4. Nitrogen + hydrogen

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Correct Option: D
Explanation:

Nitrogen (N2) form ammonia (NH3) by a reaction with hydrogen (H2) using a metal catalyst under high temperatures and pressures. It is a chemical combination reaction. Hence the mixture of nitrogen and hydrogen is difficult to separate because a new product is formed.

Why is sugar a mixture?

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Because the composition is not fixed

  2. Because it's composition is fixed

  3. Because it is crystalline in nature

  4. Because it is soluble in water

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Correct Option: A
Explanation:

When two or more substances are mixed in any ratio, a mixture is formed.

Why alloys are always considered as mixtures?

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. They have a fixed composition

  2. They shows the properties of its constituents

  3. They can be seperated into its constituents by physical method

  4. All of the above

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Correct Option: B
Explanation:

Alloys are homologous mixtures of metals and cannot be separated into its constituents by physical methods. It is still considered a mixture because it shows the property of its constituents and can have variable composition.


Hence, the correct option is $\text{B}$

The solute particles in a true solution are:

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. settle down

  2. do not settle down

  3. floats on the surface

  4. All of the above

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Correct Option: B
Explanation:

The some particles in a true solution do not settle down a true solution is clear and transparent. It do not scatter light.

Identify the heterogeneous mixture among the following:


( Brass, common salt and sulphur, water and oil, aerated water, steel )

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Common salt and sulphur, Water and oil

  2. Brass, Aerated water, Steel

  3. Common salt and sulphur, Steel, Brass

  4. All of the above

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Correct Option: A

Kerosene is an example of :

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. homogeneous mixture

  2. heterogeneous mixture

  3. both A and B

  4. none of the above

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Correct Option: A
Explanation:

Kerosene is an example of homogeneous mixture of many hydrocarbons. Properties and composition are uniform throughout.

Which sample is a homogeneous mixture?

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Kl(aq)

  2. Fe(s)

  3. $CO _2$(g)

  4. $NH _3$(l)

  5. NaCl(s)

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Correct Option: A
Explanation:

${ CO } _{ 2 }$ and ${ NH } _{ 3 }$ are a compound as it is made up of different elements.${ Fe(s) } _{  }$ is a pure substance as it is made up of a single element.


$NaCl$ is also a pure substance.${ NH } _{ 3 }$ is a compound as it is made up of different elements.

$KI(aq)$ is a homogeneous mixture as its composition is uniform throughout the mixture.

Hence the correct option is A.

Just because you mix two things together does not necessarily mean that they will form a homogeneous mixture (a solution).
For example, if you add sodium chloride, $NaCl$, to a container that has both hexane and water, the $NaCl$ will dissolve into the water, but will not be found in the hexane $C _{6}H _{14}$.
Which of the following statements BEST explains these observations?

chemistry mix and separate different types of mixtures homogenous and heterogenous mixtures all about mixtures

  1. Polar water molecules form ion-dipole forces with the ions of $NaCl$. Hexane, being nonpolar, cannot form these ion-dipole interactions.

  2. Nonpolar hexane molecules tend to repel the ions that make up $NaCl$.

  3. Nonpolar hexane is less dense that water, so when the two are in the same container, any $NaCl$ that is added to the mixture sinks to the bottom of the container and cannot get into the hexane layer.

  4. Nonpolar hexane molecules and water molecules repel one another.

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Correct Option: A
Explanation:

NaCl is ionic in nature and soluble in polar solvent and insoluble in non-polar solvent like hexane because polar water molecules form ion-dipole forces with the ions of NaCl, which is not sceen in case of hexane.