The portion $AB$ of the indicator diagram representing the state of matter denotes
The liquid state of matter
Gaseous state of matter
Change from liquid to gaseous state
Change from gaseous state to liquid state
A cylindrical metal rod of length $L_0$ is shaped into a ring with a small gap as shown. On heating the system
A faulty thermometer has its fixed points marked $5^o$ and $95^o$. This thermometer reads the temperature of a body as $59^o$. Then, the correct temperature of the body on the Celsius scale is ...... $^o$
A centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temp is lowered until the Fahrenheit temp. register $140^o$. What is the fall in the temperature as registered by centigrade thermometer ....... $^oC$
Liquid oxygen at $50\ K$ is heated to $300\ K$ at constant pressure of $1\ atm$. The rate of heating is constant. Which of the following graphs represents the variation of temperature with time ?
Steam at $100\,^oC$ is more dangerous than the same mass of water at $100\,^oC$ because the steam