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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.
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उत्तर
“The properties of the products are different from those of the constituents.” This statement best describes a compound.
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संबंधित प्रश्न
The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is :
Define the following:
Impure substance
Give two examples of the following type of mixture.
solid-solid
Write “true” or “false” for the following statement
Jewellery gold is a homogeneous mixture of metals.
Tick (√) the correct alternative from the choice given for the following statement:
Copper is not a part of the alloy
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.
Write the sequence of steps you would use for making tea. (Use the words: mixture, dissolve, filtrate and residue).
Name the process associated with the following
Settling of sand when a mixture of sand and water is left undisturbed for some time.
A mixture of chloroform and water are taken in a separating funnel is mixed and left undisturbed for some time. The upper layer in the separating funnel will be of ______ and the lower layer will be that of ______.
