Air Around us - Class 6 - Science
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Extra Questions - Air Around us | NCERT | Science | Class 6
The ozone layer protects the environment by:
A. Not allowing sun rays to enter Earth's atmosphere.
B. Producing more oxygen.
C. Not allowing harmful UV rays to enter Earth's atmosphere.
D. Ozone layer is harmful for our environment.
The correct answer is Option C: Not allowing harmful UV rays to enter Earth's atmosphere.
The ozone layer serves as a vital protective shield in the Earth's stratosphere. It primarily functions by absorbing the majority of the sun's harmful ultraviolet (UV) radiation. Without this protection, these UV rays could severely damage living organisms, including increasing the risk of skin cancer and cataracts in humans, and affecting the growth of plants and marine ecosystems.
Which of the following statements is correct?
A. Gases are not rigid.
B. Gases occupy less space than solids and liquids.
C. Gases do not diffuse rapidly.
D. All of the above.
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Sign up now8 (c) Identify the solutions among the following mixtures. c. Air
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Sign up nowQuestions & Answers - Air Around us | NCERT | Science | Class 6
What is the composition of air?
Air is a mixture comprising mainly of nitrogen and oxygen. These two gases make up about 99% of the air, with nitrogen forming the majority. The remaining 1% consists of carbon dioxide, a few other gases, and water vapour. Additionally, air also contains dust particles.
Which gas in the atmosphere is essential for respiration?
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