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प्रश्न
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
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उत्तर
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called rust.
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संबंधित प्रश्न
“Air is a mixture”. Support this statement citing at least three evidences.
What are the two ways in which nitrogen fixation occurs?
Fill in the blanks
Oxygen is used in ___________the food to get _______.
Complete the statement given below by filling in the blank with the correct word from the words given
___________is an example of a pollutant present in the air.
Complete the statement given below by filling in the blank with the correct word from the words given:
The component of air used in photosynthesis is ______ and the products of photosynthesis is oxygen.
Name the following:
The main, rare (inert) gas present in air.
Which of the following is true about oxygen?
______ present in the air is needed for respiration.
During respiration, carbon-di-oxide is exhaled out of the body through the ______.
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?
