Multiple choice

Which of the following statements is/are false?

a. Air always contains suspended particles that may be dust, smoke or any other material. b. The presence of dust particles in air never varies from place to place and time to time. c. Air always contains some amount of water vapours.

  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
C Correct answer
Explanation

This is the correct option as this statement is false. The presence of dust particles in air varies from place to place and time to time.

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