A student wishes to check the upper and the lower fixed points on a Celsius scale thermometer. She has four beakers P, Q, R and S. Beaker P contains a mixture of ice and salt. Beaker Q contains a mixture of ice and water. Beaker R contains boiling salt solution. Beaker S contains boiling water Which two beakers should she use to check the fixed points?
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A student wishes to check the upper and the lower fixed points on a Celsius scale thermometer. She h...
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