[ Question Bank ] - 2022 — Science STD 10 — Question

While deciding the unit for heat, temperature interval chosen is 14.5 °C to 15.5 °C.
Reason:
When 1 kg of water is heated through 1 °C in various temperature ranges, the amount of heat required to raise temperature by 1 °C varies slightly from range to range. Hence, it is essential to define a specific temperature range while defining a unit of heat.