Fill in the blanks with appropriate words: ( atmosphere, mixture, motion, dissolved,).

1. Air is not one substance but a ……………………..
2. When air is in ………………. it is called wind.
3. Our earth is surrounded by ………………………...
4. The aquatic animals use ………………. oxygen in the water for respiration.

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Solution

1. Air is not one substance but a mixture.
2. When air is in motion it is called wind.
3. Our earth is surrounded by an atmosphere.
4. The aquatic animals use dissolved oxygen in the water for respiration.

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Similar questions

Q. Fill in the blanks with appropriate words: (dust, atmosphere, mixture, motion, dissolved, oxygen).

1. Air is not one substance but a ……………………..
2. When air is in ………………. it is called wind.
3. Our earth is surrounded by ………………………...
4. The aquatic animals use ………………. oxygen in the water for respiration.
5. Air contains ………………… particles.
6. The component of air that supports burning is called …………………

Q. (dust, atmosphere, mixture, motion, dissolved, oxygen).

1. Air is not one substance but a .
2. When air is in it is called wind.
3. Our earth is surrounded by
4. The aquatic animals use oxygen in the water for respiration.
5. Air contains particles.
6. The component of air that supports burning is called

H₂ is present in air then why it forms an explosive mixture with air when it is collected by downward displacement of air IN LABORATORY PREPARATION OF H₂

Q. Identify the correct statements:
(1)

H_{2} S

is a colourless, poisonous gas with a smell like that of rotten egg.
(2)

H_{2} S

is lighter than air.
(3)

H_{2} S

is fairly soluble in water at 0 °C and 1 atmospheric pressure.
(4) Aqueous solution of

H_{2} S

is basic and turns red litmus blue.

Q. (1)

Make sentences using the given set of words.

(a) 99%, oxygen, nitrogen, air, together

(2)

Make sentences using the given set of words.

(b) Respiration, dissolved, animals, air, aquatic

(3)

Make sentences using the given set of words.

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1. Air is not one substance but a mixture. 2. When air is in motion it is called wind. 3. Our earth is surrounded by an atmosphere. 4. The aquatic animals use dissolved oxygen in the water for respiration.

1. Air is not one substance but a mixture.
2. When air is in motion it is called wind.
3. Our earth is surrounded by an atmosphere.
4. The aquatic animals use dissolved oxygen in the water for respiration.