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प्रश्न
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of compound
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उत्तर
Separation of compound
Elements –Elements occur on their own or as compounds and can be separated by chemical and physical methods. Example: Iron, copper.
Compounds – Elements in a compound are chemically combined and can be separated by chemical methods only. Example: Iron Sulphide, copper oxide.
Mixtures – Components in a mixture can be separated by physical methods only.
Example: Iron + sulphur
संबंधित प्रश्न
Fill in the blank
In a _______ the substances are not combined chemically.
Write true or false
The constituents of a mixture can only be separated by chemical means.
What are the different types of mixtures ?
Name the elements which form water.
How will you justify that water is a compound?
What is the proportion of element present in the following compound?
H2O
Name two compounds which dissolve in water.
Write the molecular formulae of compound hydrogen sulphide.
Give the example of a compound containing nitrogen and oxygen.
Give the example of a compound containing calcium and oxygen.
Select the correct answer from the choice given below.
A compound
What is the molecular formula of the following compound?
glucose
What is the molecular formula of the following compound?
Methane
Explain the difference between Mixture and compounds.
Assertion: Oxygen is a compound.
Reason: Oxygen cannot be broken down into anything simpler.
State whether true or false. If false, correct the statement.
Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
The other name for potassium hydroxide is caustic potash.
Reason out
Sand is also known as silica.
Name the compounds used in fertilizers.
