Rishi is surprised when he sees water boiling at 115^{\circ} {\C} in a container. Give reasons as to why water can boil at the above temperature.

ICSE Class 10 Physics 2015 Solved Paper - Question 26

Question : 26 of 74

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Rishi is surprised when he sees water boiling at

115^{∘} {\C}

in a container. Give reasons as to why water can boil at the above temperature.

Solution:

Generally, water is boiling at

100^{∘} {\C}

but Rishi is surprised when he sees water boiling at

115^{∘} {\C}

. Because the boiling point of liquid (water) increases by the addition of impurities (e.g., salt) to it.

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