Advertisements
Advertisements
प्रश्न
The natural way of adding oxygen to air which involves green plants is called
विकल्प
photosynthesis
respiration
burning
dissolution
Advertisements
उत्तर
photosynthesis
APPEARS IN
संबंधित प्रश्न
Two substances which undergo rapid oxidation.
Fill in the blank :
Oxygen occupies about _____% of air by volume.
Statement given below is incorrect. Write the correct statement :
The percentage of oxygen in air by volume, varies from 21% to 22%.
Fill in the blank:
Manganese dioxide acts as a _________.
State the precautions while preparing oxygen in the labo-ratory.
Complete and balance the following equation
S + 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.
Give tests for oxygen gas.
Give reason for the following:
Oxidation of sulphur results in a product which turns moist blue litmus red.
Write a note on the rusting process.
