Fire is extinguished more effectively by
Fire is extinguished more effectively by
- A
Hot water
- B
Cold water
- C
Equally by both
- D
Ice
Similar Questions
An ice cube at temperature $-20^o C$ is kept in a room at temperature $20^o C$. The variation of temperature of the body with time is given by
An ice cube at temperature $-20^o C$ is kept in a room at temperature $20^o C$. The variation of temperature of the body with time is given by
A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
- [AIIMS 1998]
Explain three states and change in states for matter.
Explain three states and change in states for matter.
What is isolated system ?
What is isolated system ?
At temperatures close to $0\ K$ , the heat capacity $C$ of a certain solid is related to its temperature $T$ by the equation $C = aT^3$ , where a is a constant characteristic of the solid. Heat is supplied to the solid at a steady rate. Which graph best represents the variation of its temperature $T$ with time $t$ ?
At temperatures close to $0\ K$ , the heat capacity $C$ of a certain solid is related to its temperature $T$ by the equation $C = aT^3$ , where a is a constant characteristic of the solid. Heat is supplied to the solid at a steady rate. Which graph best represents the variation of its temperature $T$ with time $t$ ?