Maximum density of $H_2O$ is at temperature
$32\,^oF$
$4\,^oK$
$4\,^oF$
$39.2\,^oF$
Amount of heat required to raise the temperature of a body through $1 ^o C$ is called its
If there are no heat losses, the heat released by the condensation of $x$ gm of steam at $100^o C$ into water at $100^o C$ can be used to convert $y$ gm of ice at $0^o C$ into water at $100^o C$. Then the ratio $y : x$ is nearly
The portion $AB$ of the indicator diagram representing the state of matter denotes
$200\, g$ of a solid ball at $20\,^oC$ is dropped in an equal amount of water at $80\,^oC$ . The resulting temperature is $60\,^oC$ . This means that specific heat of solid is
Compared to a burn due to water at $100\,^oC,$ a burn due to steam at $100\,^oC$ is