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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement:
A gas dissolved in a liquid can be separated by
विकल्प
filtration
boiling
using magnet
by crystallisation
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उत्तर
boiling
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संबंधित प्रश्न
What are the characteristic properties of a pure substance? Why do we need them?
The constituents of a mixture are present in a fixed ration.
Define the following:
Pure substance
Define the following:
Impure substance
Give two examples of the following type of mixture.
solid-solid
Tick (√) the correct alternative from the choice given for the following statement:
A heterogeneous mixture is
Give an example of mixtures of elements and compounds.
Name the following:
A mixture of two immiscible liquids
Give reasons for the following:
Naphthalene and camphor cannot be separated by sublimation.
Which of the following are physical changes?
(i) Melting of iron metal
(ii) Rusting of iron
(iii) Bending of an iron rod
(iv) Drawing a wire of iron metal
