Tag: pure substance and mixtures

Questions Related to pure substance and mixtures

Which method separates a mixture of sugar and glass?

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. dissolve, filter and evaporate

  2. distillation

  3. fractionally distill

  4. use chromatography

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Correct Option: B
Explanation:

$\text{Distillation is a way of seperation substances based on the difference in their boiling points}$

The medium having same chemical properties in all directions is called :

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. Isotropic medium

  2. Anisotropic medium

  3. Optically denser medium

  4. Light medium

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Correct Option: A
Explanation:

Isotropic medium is the one in which permeability and permittivity are unifrom in all directions,

hence, it is having same chemical properties in all directions.

Which one of the following is neither an element nor a compound?

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. Air

  2. Glucose

  3. Gold

  4. Water

  5. Carbon

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Correct Option: A

Which of the following is not a property of compounds?

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. Components are present in a fixed proportions

  2. They are always homogeneous

  3. The components in compounds do not retain their original properties

  4. The components in compounds can be separated by physical means

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Correct Option: D
Explanation:

The components of compounds can be separated by chemical means. Rest all are properties of compounds.

The components in compounds ______ their original properties.

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. retain

  2. do not retain

  3. both A and B 

  4. none of the above

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Correct Option: B
Explanation:

The components in compounds do not retain their original properties.

The components in mixtures _______ their original properties. 

chemistry pure substances and mixtures: separation of mixtures difference between mixtures and compounds pure substance and mixtures types of pure substances

  1. retain

  2. do not retain

  3. both A and B

  4. none of the above

Show answer
Correct Option: A
Explanation:

The components in mixtures retain their original properties.