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प्रश्न
Write the molecular formulae of compound hydrogen sulphide.
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उत्तर
Compounds Hydrogen sulphide is formed of elements hydrogen (H), Sulphide (S).
Symbolic Combining Power :
Formula is H2S
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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
Fill in the blank
In a _______ the substances are not combined chemically.
Name the elements present in Sugar
Name the elements present in Ammonia
Name the elements present in Washing soda
What is the proportion of element present in the following compound?
NO2
State three differences between water and air.
Write the molecular formulae of compound carbon monoxide
What is the molecular formula of the following compound?
glucose
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Explain the characteristics of compounds
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
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
Reason out
Sand is also known as silica.
When does the pressure of the gas increase?
