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प्रश्न
Name the following
A black non-metallic component of the mixture gunpowder.
उत्तर
Carbon.
संबंधित प्रश्न
‘‘The properties of the product are different from those of the constituents''. State whether this statement best describes an element, a compound or a mixture.
Classify the following materials as homogeneous mixtures and heterogeneous mixtures :
Soda-water, Wood, Air, Soil, Vinegar, Alcohol and water mixture, Petrol and water mixture, Chalk and water mixture, Sugar and water mixture, Copper sulphate solution.
What is meant by (i) homogeneous mixtures, and (ii) heterogeneous mixtures ? Give two examples of homogeneous mixtures and two of heterogenous mixtures.
Which method can be used to separate a mixture of naphthalene and common salt ?
Define the following:
Solution
Give an example of mixtures of elements and compounds.
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 are present in a definite proportion.
Give an example for mixture and justify your answer with reason.
Tabulate Differences between mixtures and compounds.
