Advertisements
Advertisements
प्रश्न
The most abundant element in the earth’s crust.
उत्तर
Oxygen.
APPEARS IN
संबंधित प्रश्न
Two substances which undergo rapid oxidation.
Taking hydrogen peroxide, how would you prepare oxygen in the laboratory ?
What happens when potassium nitrate is heated
The natural way of adding oxygen to air which involves green plants is called
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 _________.
How will you obtain dry oxygen in the laboratory?
Complete and balance the following equation
Al + O2 →
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Phosphorus pentaoxide on dissolving in water forms _________ acid.
Tick (√ ) the most appropriate answer.
Sodium burns in oxygen with a flame which is :
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
