Advertisements
Advertisements
प्रश्न
Name the following:
The main, rare (inert) gas present in air.
Advertisements
उत्तर
Argon
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
Tick (√) the most appropriate answer.
A gas which dilutes the activity of oxygen in air is:
Tick (√) the most appropriate answer.
Which is not a polluting gas for the air?
Statement given below is incorrect. Write the correct statement :
Potassium nitrate on strong heating decomposes into potassium nitrite and nitrogen gas.
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
What is the source of carbon dioxide in air?
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
Why do traffic assistants wear a mask on duty?
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
