Is the specific heat of water greater than that of sand?

The specific heat of a substance at temperature $T^{\circ}C$ is given by $C = \alpha T^2 + \beta T + \gamma$. The amount of heat required to raise the temperature of a mass $m \, g$ of the substance from $0^{\circ}C$ to $T_o^{\circ}C$ is .......

Draw a graph of the variation of specific heat capacity of water with temperature and define calorie.

Define specific heat capacity and write its $SI$ unit.

How much energy is produced in the burning of $1\, kg$ of coal?

On which factors does the heat capacity depend?