Advertisements
Advertisements
प्रश्न
Define Compounds
Advertisements
उत्तर
Compounds: Compounds are pure substances composed of two or more elements in definite proportion by mass and has a definite set of properties. The compound is made up of only one kind of molecules
APPEARS IN
संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
Name the elements which form water.
How will you justify that water is a compound?
Name the elements present in Sugar
What is the proportion of element present in the following compound?
NO2
Name two compounds which dissolve in water.
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing hydrogen and oxygen.
State two characteristics of water which prove that it is a – compound.
What is the molecular formula of the following compound?
Sodium chloride
What is the molecular formula of the following compound?
Methane
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.
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
Write any two properties of a compound.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
The other name for potassium hydroxide is caustic potash.
Reason out
Sand is also known as silica.
Name the compounds used in fertilizers.
