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
A chemical called oxygenated water.
Give four uses of oxygen.
Fill in the blank:
Oxygen occupies about ______ of air by volume.
State the use of manganese dioxide in the laboratory prepa-ration of oxygen from potassium chlorate.
How will you obtain dry oxygen in the laboratory?
State two characteristics of Basic 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 :
The oxygen gas turns moist blue litmus red.
Tick (√ ) the most appropriate answer.
The catalyst used in the preparation of oxygen from hydrogen peroxide is :
Write fully balanced equation for the following :
Na2O + H2O →
