Advertisements
Advertisements
प्रश्न
Give the example of a compound containing hydrogen and oxygen.
Advertisements
उत्तर
Example of Atoms of a different element forming a compound
2 Atom of H and 1 atom of O = H20
संबंधित प्रश्न
Fill in the blank
In a _______ the substances are not combined chemically.
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.
Name the elements present in Washing soda
What is the proportion of element present in the following compound?
H2O
Name two compounds which dissolve in water.
Write the molecular formulae of compound hydrogen sulphide.
Write the molecular formulae of compound carbon monoxide
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties
What is the molecular formula of the following compound?
Sulphuric acid
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.
Assertion: Oxygen is a compound.
Reason: Oxygen cannot be broken down into anything simpler.
Match the following.
| Iron | For making wires |
| Copper | Sewing needle |
| Tungsten | As a fuel for ignition in rocket |
| Boron | Making the filament of a bulb |
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
The other name for potassium hydroxide is caustic potash.
Reason out
Sand is also known as silica.
A compound has a fixed ______.
Name the compounds used in fertilizers.
