From the graph answer the following:
(i) What is the physical state of the substance at the point A?
(a) Solid and liquid both (b) Gas
(c) Liquid (d) Solid
(ii) What is the melting point of the substance?
(a) Below 150C (b) 150C
(c) 1100 C (d) Above 1100C
(iii) What is its boiling point of the substance? (a) Below 150C (b) 150C
(c) below 1100 C (d) 1100 C
(iv) What is the physical state of the substance at the point C ?
(a) Solid (b) Liquid
(c) Gas (d) Both liquid and Gas
(v) Which portions of the graph indicates that change of state is taking place?
(a) AA1(b) A1B1
(c) B1C (d) CD1
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