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Question
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
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Solution
- Because if we suck from ‘A’, lime water will be sucked out.
- Because if the air is sucked fast, lime water will also be sucked out.
- Lime water turns milky.
- The reason is the formation of CO2.
- Sulphur dioxide
RELATED QUESTIONS
Answer the question put against the following constituents of air:
Nitrogen : Explain its significance for plants and animals.
Statement given below is incorrect. Write the correct statement :
Carbon dioxide gas allows the earth to radiate out heat rapidly.
Give reason:
When water is heated, we see bubbles rising up.
Write ‘true’ or ‘false for the following;
The composition of air was discovered by Lavoisier.
Name the following:
The component of air which does not support combustion.
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
_____ gas turns lime water milky.
What is the presence of harmful substance in the air called?
Write a note on nitrogen.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
