Advertisements
Advertisements
प्रश्न
Give the example of a compound containing nitrogen and oxygen.
उत्तर
Example of Atoms of a different element forming a compound
Nitrogen dioxide, 1 atom of nitrogen 2 atom of O = NO2
संबंधित प्रश्न
Select the correct alternative from the choices given for the following statement:
A set of mixture is
Write true or false
The constituents of a mixture can only be separated by chemical means.
What are the different types of mixtures ?
State four important characteristics of compounds
Name the elements present in Sugar
Name the elements present in Washing soda
State four differences between compounds and mixtures.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing carbon and oxygen.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to properties
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of compound
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
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 |
Mention any four compounds and their uses.
State whether true or false. If false, correct the statement.
Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Reason out
Sand is also known as silica.
