Question

The temperature at which ice water and vapour exist in equilibrium

Answer 1

the correct answer may be zero degree

Answer 2

$\huge\red{As-Salamu-Alykum}$

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Temperature at which ice and water both exist is $\huge\purple{0°C .}$

Temperature of water doesn't increase from 0 °C till all ice is converted into water

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$\huge\pink{INSHALLAH it will help U}$