Advertisements
Advertisements
प्रश्न
Why is hydrogen peroxide preferred in the preparation of oxygen gas ?
उत्तर
H2O2 is preferred for lab preparation of oxygen because of following reasons.
- No heating is required.
- The rate of evolution of oxygen (O2) is moderate and under control.
H2O2 is a safe chemical.
APPEARS IN
संबंधित प्रश्न
Two substances which undergo rapid oxidation.
What is the role of manganese dioxide in the preparation of oxygen?
Give four uses of oxygen.
Fill in the blank :
Oxygen occupies about _____% of air by volume.
How will you identify oxygen in the laboratory ?
State two characteristics of Acidic oxides.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
The nitric oxide gas reacts with the oxygen and water vapour to form ______ vapour.
Statement given below is incorrect. Write the correct statement :
Calcium burns in oxygen with a golden-yellow flame.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
Describe what you will observe and write fully balanced equation when the following is introduced in a jar of oxygen.
Burning magnesium
