A substance X was heated at constant pressure and the temperature...

A substance

\mathbf{X}

was heated at constant pressure and the temperature observed at various times of heating was plotted as given below A substance X was heated at constant pressure and the temperature observed at various times of heating was plotted as

A substance X was heated at constant pressure and the temperature observed at various times of heating was plotted as

Which of the following is/are correct? I. Melting point of

\mathbf{X}

-5^{{}^{{}^{\circ}}} \mathrm{C}

II. Solid and liquid forms of

\mathbf{X}

coexist in the region b III. Boiling point of

\mathbf{X}

55^{{}^{{}^{\circ}}} \mathrm{C}

IV. Solid and liquid forms of

\mathbf{X}

coexist in the region d

Options

AI and IV
BII and III
CIII only
DI , II and III

Correct answer

B. II and III

Step-by-step solution

No Solution

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