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प्रश्न
Explain the term compounds.
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उत्तर
A compound is a pure substance made up of two or more different elements combined chemically in a fixed proportion.
संबंधित प्रश्न
Select the correct alternative from the choices given for the following statement:
A set of mixture is
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
Write true or false
The constituents of a mixture can only be separated by chemical means.
State four important characteristics of compounds
Name the elements present in Marble
What is the proportion of element present in the following compound?
CO2
Write the molecular formulae of compound hydrogen sulphide.
Select the correct answer from the choice given below.
A compound
What is the molecular formula of the following compound?
Sulphuric acid
What is the molecular formula of the following compound?
Methane
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is known to form the largest number of compounds.
Write any two properties of a compound.
Higher-Order Thinking questions:
Why is water considered a compound?
The other name for potassium hydroxide is caustic potash.
Reason out
Sand is also known as silica.
Name the compounds used in fertilizers.
