Tag: chemistry

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

The components retain their individual properties in:

  1. Solutions

  2. Mixtures

  3. Compounds

  4. Solvents
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

1) Solution is a homogeneous mixture of two or more substances.
2)Compound a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight
3) solvent is a substance that dissolves a solute (a chemically different liquid, solid or gas), resulting in a solution.

Hence only mixtures are the one in which the individual properties of the components are retained

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

Steel is a type of :

  1. Solid-liquid heterogeneous mixture

  2. Solid-solid heterogeneous mixture

  3. Solid-solid homogeneous mixture

  4. Pure substance
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Centrifugation is a technique which involves the application of centrifugal force to separated particles from a solution.Generally this is used in wasting machines to separated water particles from cloths during dry washing.

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

Mixture perfectly uniform in its composition and properties throughout its bulk is called :

  1. homogeneous mixture

  2. heterogeneous mixture

  3. both A and B

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mixture perfectly uniform in its composition and properties throughout its bulk is called homogeneous mixture, e.g., solution of alcohol in water, dust free air etc.

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

Among the following, bronze is a/an example of :

  1. an element

  2. a mixture

  3. a compounds

  4. all of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bronze is a alloy, it is composed of the mixture of copper and tin. It was made before 3000 bc, though its use in artifacts did not become common until much later. The proportions of copper and tin varied widely (from 67 to 95 percent copper in surviving artifacts).