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प्रश्न
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
पर्याय
True
False
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उत्तर
True.
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संबंधित प्रश्न
What do you understand by the term polluted air?
What happens when Carbon burns in oxygen ? Also give the balanced chemical equation for the reaction.
The diagrams below represents an experiment to show the presence of a component of air.
- State why air is sucked from – outlet ‘B’ and not from outlet “A”
- State why the air is sucked ‘slowly’ from the outlet “B”
- State the observation seen after completion of the experiment.
- State the reason for the above observation seen.
- Name another component which if present in air as a pollutant would have given a similar observation
Compare respiration and combustion-both involving oxygen of the air.
The constituent of air that supports combustion is _____.
Inhaled air contains a large amount of carbon-di-oxide.
How do astronauts breathe when they go beyond the earth’s atmosphere?
What was the old name of nitrogen?
Nitrogen is about two times more soluble in water than oxygen.
Explain the following observations very briefly
An empty glass in fact is not empty.
