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प्रश्न
Classify the following.
( Dog, Cat, coconut tree, monkey, brinjal plant, papaya plant)
| Things which give out oxygen | Things which give out carbon dioxide |
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उत्तर
| Things which give out oxygen | Things which give out carbon dioxide |
| Brinjal plant | bog |
| Papaya plant | Cat |
| Coconut tree | Monkey |
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संबंधित प्रश्न
Fill in the blank
The supporter of combustion in air is _____.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air which is variable in air above sea level and in air in general ______.
Of the total volume of air – 4/5th is nitrogen. State the utility or consequence of this ratio.
Compare respiration and combustion-both involving oxygen of the air.
What happens if the percentage of carbon-dioxide increases in the air?
Nitrogen is used in the food packaging industry because it _____.
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
Observe the picture given in figure carefully and answer the following questions.
- What is covering the nose and mouth of the police man?
- Why is he putting a cover on his nose?
- Can you comment on air quality of the place shown in the figure?
