Multiple choice general knowledge science & technology

One kg of air is compressed from 1 m3 to 0.5 m3. Which of the following statements is true?

  1. The density is halved

  2. The mass is doubled

  3. The density is doubled

  4. The mass is halved
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Density is mass divided by volume. When the volume is reduced to half while the mass remains constant, the density must double. The initial density of 1 kg/m³ becomes 2 kg/m³ after compression.

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