Question

To convert 10 gm of ice at -2°C to vapour at 115°C, we need to know the following values :
(a) Latent heat of fusion of ice (b) Latent heat of vapourisation of water
(c) Specific heat of water (d) Specific heat of steam (e) Specific heat of ice
●Only a, b &e
●nly a, c&e
●All a, b, c, d & e
●Only a, b &c​

Answer 1

Explanation:

Ancient people of India and Egypt cooled liquids in porous earthen jars.

All coastal cities Viz Madras, Bombay and Calcutta used to have ICE house where the Britishers used to store ICE harvested from western part of the globe to be used during summer season for keeping cool.

Most evidence indicates that the Chinese were the first to store natural ice and snow to cool wine and other delicacies. In 1834, Jacob Perkins, an American, developed a closed refrigeration system using liquid expansion and then compression to produce cooling.