By which process does the smell of cooking spread to all the rooms in a house?

Correct answer: B. Diffusion

  • A. Distillation
  • B. Diffusion
  • C. Decomposition
  • D. Displacement

Explanation

Diffusion causes cooking-smell molecules to move from the region of higher concentration near the kitchen into rooms where their concentration is lower. Distillation and decomposition are unrelated processes.

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