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प्रश्न
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
विकल्प
True
False
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उत्तर
Compounds and elements are pure substances- True
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संबंधित प्रश्न
Select the correct alternative from the choices given for the following statement:
A set of mixture is
What is the difference between a pure substance and a mixture ?
Name the elements present in Marble
What is the proportion of element present in the following compound?
CaO
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Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Sodium chloride is used as table salt and for flavoring and preserving food.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
Reason out
Sand is also known as silica.
