Multiple choice

Which of the following statements is/are false?

a. Gases like carbon dioxide, helium and water vapours constitute the major volume of air. b. The fine hair and mucus within the nasal passage prevents the dust particles from getting into the respiratory system. c. Air is necessary for the burning of any substance.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

  5. Only c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as this statement is false. Gases like carbon dioxide, helium and water vapours constitute only 1 % of the volume of air.

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