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प्रश्न
Tick (√) the most appropriate answer.
Which is not a polluting gas for the air?
पर्याय
Sulphur dioxide gas
Nitrogen dioxide gas
Carbon monoxide gas
Neon gas
उत्तर
Neon gas
APPEARS IN
संबंधित प्रश्न
Define the term smog.
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
Define the following:
Combustion.
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
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 ______.
Name the following:
The product formed when phosphorus burns in oxygen.
State four different properties of a compound and a mixture.
Air is made up of oxygen only.
Which of the following is true about oxygen?
How do astronauts breathe when they go beyond the earth’s atmosphere?
