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A.
the temperature at which its vapour pressure equals the atmospheric pressure
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B.
the temperature at which bubbles begin to form
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C.
the temperature at which the vapour pressure equals 1 temperature
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D.
the temperature at which the rate of condensation of vapour equals the rate of vaporisation of the liquid
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E.
the temperature at which the space above the liquid is saturated
Correct Answer: Option A
Explanation
The boiling point of a substance is the temperature at which the vapor pressure of a liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.
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