Unit of Heat

Q.

One calorie is the heat energy required to raise the temperature of one gram of water by ___ degree Celsius at a pressure of one atmosphere.

Q. Which of the following units is used to measure the thermal energy in a body?

1. Celsius

2. Joule

3. Fahrenheit

4. Kelvin

Q.

in the definition of calorimetry why particularaly 14.5-15-5 degree celsius is the number specified?

Q. 1 kilocalorie of heat is provided to a system. Calculate the equivalent joules of heat provided to it.

1. 239

Q.

A copper calorimeter of mass 100g contains 150g of water and 10g of ice in thermal equilibrium at atmospheric pressure. A piece of lead of mass 100g at 200°C is dropped into calorimeter . Find the final temperature (assume no heat is lost to the surrounding) and the amount of ice left. (Take L=335 kJ/kg), if required.

Q. Water equivalent of a body is measured in

1. kg
2. calorie
3. kelvin
4. m${}^3$

Q. One calorie is equal to .

1. $\text{4.5 J}$
2. $\text{4.184 J}$
3. $\text{5 J}$

Q. Statement I: The equivalent weight of any substance is its molecular weight divided by some factor, depending on the nature of the substance.
Statement II: The equivalent weight of any substance is always less than its molecular weight.

1. If both statements are CORRECT, and Statement II is the CORRECT explanation of Statement I.
2. If both statements are CORRECT, and Statement II is NOT the CORRECT explanation of Statement I.
3. If Statement I is CORRECT, but Statement II is INCORRECT.
4. If Statement I is INCORRECT, but Statement II is CORRECT.