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प्रश्न
Name the following:
An inert gas which has a low boiling point and is used for producing very low temperatures
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उत्तर
Helium
संबंधित प्रश्न
Give reason:
When water is heated, we see bubbles rising up.
Explain the importance of nitrogen of the air for plant growth.
Name the following:
The component of air which is present more in industrial areas.
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.
Mention one necessary condition for the combustion to take place.
_____ gas turns lime water milky.
Analogy
Photosynthesis : _____ :: Respiration : Oxygen
The air in coastal areas have more oxygen.
A ______ gas that is used to remove carbon impurities from the steel.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
