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Graph of temperature against heat supplied as ice is heated to steam

The same question, asked 2 times: 30 Jan 2024*, 28 Jan 2026 S1. Every wording below, oldest first.

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  1. Question 1

    30 Jan 2024

    94
    A block of ice at −10∘C-10^{\circ}C is slowly heated and converted to steam at 100∘C100^{\circ}C. Which of the following curves represent the phenomenon qualitatively?

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  2. Question 2

    28 Jan 2026 S1

    8
    Which of the following best represents the temperature versus heat supplied graph for water, in the range of −20∘C-20^{\circ}C to 120∘C120^{\circ}C ?

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