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प्रश्न
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
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उत्तर
Both statements are false.
Correct statement:
- Air is a mixture of gases.
- Air consists of Nitrogen Oxygen, CO,, other noble gases.
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संबंधित प्रश्न
Name the process by which the components of following mixtures can be separated.
- Iron and sulphur
- Ammonium chloride and sand
- Common salt from sea water
- Chaff and grain
- Water and mustard oil
- Sugar and water
What is the proportion of element present in the following compound?
NO2
Name two compounds which dissolve in water.
State the information obtained from the formula of a compound.
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing carbon and oxygen.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Reason out
Sand is also known as silica.
