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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement:
A heterogeneous mixture is
पर्याय
made up of only one kind of atom
made up of only one kind of molecule
made up of different kinds of atoms and molecules.
that looks uniform
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उत्तर
that looks uniform
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संबंधित प्रश्न
Which of the following are homogeneous in nature ?
- ice
- wood
- soil
- air
Define the following:
Alloy
Give reason:
Why sulphur does dissolve when carbon disulphide is added to a mixture of iron and sulphur but not when it is added to iron sulphide?
Name two substances which can sublime.
Write “true” or “false” for the following statement
A pure substance consists of only one kind of atom or molecule.
Explain the term mixtures.
Match the statements in List I with the correct answer in List II.
| List I | List II |
| 1. Purification of water by adding alum | A: Sublimation |
| 2. Seawater leaving behind common salt | B: Sieving |
| 3. Separation of camphor and potassium chloride | C: Filtration |
| 4. Separation of charcoal from a charcoal-water mixture | D: Sedimentation |
| 5. Separation of bran and wheat flour | E: Evaporation |
State whether the following statement is true or false. If false write – the correct statement.
Components in a mixture can be separated by physical and chemical methods.
Four atoms of hydrogen combine with one atom of carbon to give methane [CH4]. State the valency of carbon.
Name the process associated with the following
Settling of sand when a mixture of sand and water is left undisturbed for some time.
