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प्रश्न
Statement given below is incorrect. Write the correct statement :
Helium gas at low pressure is used for filling electric bulbs.
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उत्तर
Argon gas at low pressure is used for filling electric bulbs.
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
What happens when Carbon burns in oxygen ? Also give the balanced chemical equation for the reaction.
Complete the statement given below by filling in the blank with the correct word from the words given:
The product formed which is common to both combustion and respiration is ______.
Why is air considered as a mixture?
Write the percentage of the gases present in air.
_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
- carbon-di-oxide
- Noble gases
- Oxygen
Carbon dioxide with water changes
How to show the presence of carbon-di-oxide in the air?
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
