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NEETChemistryStates of Matter

When does boiling occur in a liquid?

Options

  1. AWhen the liquid becomes denser.
  2. BWhen the vapor pressure of the liquid equals the external pressure.
  3. CWhen the liquid turns into a solid.
  4. DWhen the liquid expands freely into the surroundings.

Correct answer

B. When the vapor pressure of the liquid equals the external pressure.

Step-by-step solution

Boiling occurs when the vapor pressure of the liquid becomes equal to the external pressure.

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