Adaptive Practice
Air Around Us
8 questions • Earn up to 91 XP • First attempt — go for 100%!
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Easy
What is the main gas present in the air we breathe?
Easy
Which gas in the air is essential for respiration in humans and animals?
Medium
Why do we feel short of breath at the top of a high mountain like the Himalayas?
Medium
Which of the following is NOT a component of air?
Medium
How does air help in the process of pollination in plants?
Hard
Which device is used to measure air pressure?
Hard
Why does a cricket ball sometimes swing in the air when bowled?
Hard
Which gas in the air is responsible for trapping heat and keeping the Earth warm, a phenomenon called the greenhouse effect?