Advertisements
Advertisements
प्रश्न
Give reason:
Mountaineers and divers carry oxygen cylinders with them.
Advertisements
उत्तर
For artificial respiration mountaineers carry oxygen cylinders as at high altitudes, the air is thin and breathing becomes difficult. Also divers carry oxygen cylinder for artificial respiration as there is less oxygen dissolved in water (less dense) and breathing becomes difficult.
APPEARS IN
संबंधित प्रश्न
Define the term Global warming.
Complete and balance the following chemical equation.
\[\ce{HgO ->[heat]}\] ______ + _______
Name the main components of air.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Name the following:
The product formed when phosphorus burns in oxygen.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Photosynthesis is a process by which green plants prepare their own food in the presence of sunlight and chlorophyll.
______ is responsible for making clouds.
Carbon dioxide gas is ______.
Explain the following observations very briefly
Breathing through mouth may harm you.
