EASY
6th CBSE
IMPORTANT
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The gas essential for burning is ­ .

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Important Questions on Air

EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 1
Industrial areas have more _____ than non-industrial areas. [fresh air / smoke]
EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 1
Animals such as earthworms breathe through their _____.
EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 2

Define the following term in your own words.

Dissolved oxygen.

EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 2

Define the following term in your own words.

Water vapour.

EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 2

Define the following terms in your own words. Humidity

HARD
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 3

You are given a pie chart (Figure 15.12) on the composition of gases in air. Write the percentage of major gases found in air in the boxes. Mention the names of rare gases.
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EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 4
Why oxygen was previously called ‘fire-air’?
EASY
6th CBSE
IMPORTANT
Pruquest Science>Chapter 15 - Air>Check Your Knowledge>Q 5
Why is nitrogen in air important for us? Where do we use liquid nitrogen?