Units of Heat

Q.

The apparatus used to measure heat is called a ----------------

1. Thermometer

2. Microscope

3. Calorimeter

4. Screw gauge

Q. Latent heat of ice is 80 calorie/gm. A man melts 60 g of ice by chewing in 1 minute. His power is

1. 4800 W
2. 336 W
3. 1.33 W
4. 0.75 W

Q.

State principle of calorimetry.

Q.

State the Principle of calorimetry-

Q.

$1000cal$ of heat energy is supplied to $100g$ of ice at $0°C$. What is the final temperature of the content?

1. $0°C$

2. $20°C$

3. $5°C$

4. $3°C$

Q.

An iron ball at 104°F is dropped in a mug containing​ water at 40°C. ​ The heat will ______.

1. flow from the iron ball to the water
2. flow from the water to the iron ball​
3. not flow at all
4. increase for both

Q. $1$ calorie $=$ ____________ joule.

Q.

Name the method used to determine the specific heat capacity of a substance.

Q.

What is the principle of Calorimetry?

Q. The amount of heat required to raise the temperature of 1 kilogram of water by $1{}^{o}C$ is called :

1. Kilo-calorie
2. calorie
3. B. T. U
4. $calorie{/}^{o}C$

Q. One calorie is defined as the heat required to raise the temperature of $1gm$ of water by $1^{o}C$ in a certain pressure. The pressure is

1. $76mmofHg$
   
2. $760cmofHg$
   
3. $760mmofHg$
   
4. $7.6mofHg$
   

Q. Which of the following physical quantities is measured in calories ?

1. Heat energy
2. Force
3. Momentum
4. Temperature

Q. The S.I. unit of heat is ______.

1. erg
2. calorie
3. joule
4. watt

Q. A body was supplied $1000$ kilocalories of heat. Express this heat in mega joules.

Q. 1 volt is equivalent to:

1. $\frac{joule}{second}$
2. $\frac{newton}{second}$
3. $\frac{newton}{coulomb}$
4. $\frac{joule}{coulomb}$

Q. 1 cal = _________

1. 4.18 dynes
2. 10 joules
3. 4.18 joules
4. None of these

Q. The amount of heat energy required to raise the temperature off 1 kg of water through $1^{o}C$ is ........

1. Calorie
2. Specific Heat
   
3. Thermal capacity
   
4. Kilo calorie