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प्रश्न
Name the elements present in Marble
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उत्तर
Elements present in Marble:
Calcium, carbon & oxygen
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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.
What are the different types of mixtures ?
State four important characteristics of compounds
What is the proportion of element present in the following compound?
H2O
What is the proportion of element present in the following compound?
CO2
State four differences between compounds and mixtures.
Give the example of a compound containing carbon and oxygen.
Give the example of a compound containing nitrogen and oxygen.
State two characteristics of water which prove that it is a – compound.
What is the molecular formula of the following compound?
Hydrochloric acid
Explain the term mixture.
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
What are compounds? Give two examples.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
What is meant by compound?
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Reason out
Sand is also known as silica.
When does the pressure of the gas increase?
