A student takes 50gm wax (specific heat = 0.6 kcal/kgoC) and heats it till it boils. The graph between temperature and time is as follows. Heat supplied to the wax per minute and boiling point are, respectively

Since specific heat =0.6kcal/gm×∘C                                =0.6cal/gm×∘CFrom graph it is clear that in a minute, the temperature is raised from 0∘C to 50∘C. ⇒ Heat required for a minute =50×0.6×50=1500calAlso from graph, Boiling point of wax is 200oC.