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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
पर्याय
is a slow process
is a natural and continuous process
takes place at body temperature
all of the above
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उत्तर
all of the above
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संबंधित प्रश्न
State two similarities and two differences between respiration and burning.
How is air useful to water boats?
Write ‘true’ or ‘false for the following;
Air is a compound.
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
Why is it said that-
Air is a homogeneous mixture of various gases.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
In a number of musical instruments, air plays an important role. Can you name some such instruments?
