Tag: homogenous and heterogenous mixtures

Questions Related to homogenous and heterogenous mixtures

Which substances show variations in composition on a particulate and macroscopic level?

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

  1. A pure element.

  2. A simple compound.

  3. A homogeneous solution.

  4. A heterogeneous mixture.

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Correct Option: D
Explanation:

A heterogeneous mixture show variations in composition on a particular and macro scope level. A heterogeneous mixture do not have uniform composition. it show variation at any level whether microscope or macroscopic.

A glass of iced tea is a/an:

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

  1. homogeneous mixture

  2. heterogeneous mixture

  3. compound

  4. element

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Correct Option: B
Explanation:

A glass of iced tea is a heterogeneous mixture as it contains both solid and liquid phases simultaneously.

The mixture of gases used by deep-sea divers is helium-oxygen.

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

  1. True

  2. False

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Correct Option: A
Explanation:

The main reason for adding helium to the breathing mixture is to reduce the proportions of nitrogen and oxygen below those of air, to allow the gas mixture to be breathed safely on deep dives. A lower proportion of nitrogen is required to reduce nitrogen narcosis and other physiological effects of the gas at depth.

Magnesium sulphate in water is a ______mixture.

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

  1. solid-solid

  2. homogeneous

  3. heterogeneous

  4. colloidal

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Correct Option: B
Explanation:

Homogeneous mixture- it is a mixture of solids, liquids and gases that has the same proportions of its components in any sample,

Magnesium sulphate(Epsom salt) is also a homogeneous mixture.
The correct option is [B].

Which one of the following statement is incorrect?

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

  1. All elements are homogeneous

  2. Compound made up of a number of elements are heterogeneous

  3. A mixture is not always heterogeneous

  4. Air is a heterogeneous mixture

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Correct Option: D
Explanation:

Air is a mixture of gas in gas.

The mixture of gas in gas is always homogenous.
Thus, air is a homogenous mixture.