Advertisements
Advertisements
प्रश्न
Define the following:
Impure substance
उत्तर
Impure substance: “A substance in which some other substances are also present in smaller or larger amounts is called an impure substance. Mixtures are impure substances. An example of an impure substance is air.
APPEARS IN
संबंधित प्रश्न
The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is :
Solutions are
Give an example of mixtures of elements and compounds.
With reference to the mixture of iron and sulphur, state the main characteristics of the mixture.
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.
State whether the following statement is true or false. If false write – the correct statement.
Sodium chloride and water is an example of a mixture of elements and compounds.
Name the following:
The component of a naphthalene-sodium chloride mixture, which remains in the evaporating dish when heated together, covered with a funnel.
Give an example for mixture and justify your answer with reason.
What would you observe when
a saturated solution of potassium chloride prepared at 60°C is allowed to cool to room temperature.
Write scientific reason.
Lemon sherbet has a sweet, sour and salty taste, and it can be poured into a glass.
