Advertisements
Advertisements
प्रश्न
Complete and balance the following equation
Al + O2 →
Advertisements
उत्तर
4Al + 3O2 → 2Al2O3
APPEARS IN
संबंधित प्रश्न
The most abundant element in the earth’s crust.
Why is oxygen collected by downward displacement of water?
Fill in the blank :
____________ discovered the oxygen gas.
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphur dioxide gas, precipitation, helium
Every nine parts of water by weight contains eight parts by weight of _________.
Fill in the blank:
Oxygen is slightly _________ than air.
How will you identify oxygen in the laboratory ?
Write ‘True’ or ‘False’ in front of following statement.
Liquid oxygen is used for burning fuel in spaceships.
Tick (√ ) the most appropriate answer.
When sulphur burns in oxygen, the colour of the flame is :
(a) Starting from hydrogen peroxide how is oxygen gas prepared in laboratory?
(b) What is the function of manganese dioxide?
(c) Write fully balanced equation for the liberation of oxygen from hydrogen peroxide.
(d) Why is the above method preferred to any other method?
