Specific Heat Capacity

Q. The CGS unit of specific heat capacity is:

1. $Jk{g}^{-1}{K}^{-1}$
2. $calk{g}^{-1}{K}^{-1}$
3. $kJk{g}^{-1}{}^{\circ }{C}^{-1}$
4. $cal{g}^{-1}{}^{\circ }{C}^{-1}$

Q. What is the specific heat capacity of water?

1. 4.18 cal/g degree celsius
2. 1 cal/g degree celsius
3. 333 cal/g degree celsius
4. 80 cal/g degree celsius

Q. Equal amounts of heat is supplied to two bodies A and B of same mass made of different materials. Body A shows more temperature rise as compared to body B. Which of the following statements is true?

1. Body A has higher specific heat than body A.
2. Body B has higher specific heat than body A.
3. Body A has same heat capacity as body B.
4. Body B has half the heat capacity as body A.

Q. Collision between electrons produces heat and as a result there is an increase in temperature.

1. False
2. True

Q.

Surgical instruments are sterilized by placing them in ____water.

Q. _____ is the heat energy required to raise the temperature of one gram of water by $1^{\circ }C$ at a pressure of one atmosphere.

1. 1 calorie
2. 1 joule
3. 1 volt
4. 1 horsepower

Q.

Give reasons-

Surgical instruments are sterilized before use.

Q. A metal and a wooden chair are placed outside on a hot sunny day. Which chair will become hotter in one hour?

Q. Collision between electrons produces heat and as a result there is an increase in temperature.

1. True
2. False

Q.

For a certain engineering application, it is required to rise the temperature of a given mass of a body as quickly as possible. The material should have

1. High specific heat capacity

2. High density

3. Low specific heat capacity

4. Heat capacity

Q. Specific heat capacity of a material is dependent on which of the following factors?

1. Mass of the substance
2. Temperature change
3. The material of the substance
4. Heat energy supplied

Q.

The thermal capacity will _______ if we make the base of the cooking pan thick.

Q.

Define Latent heat of vaporization. [2 MARKS]

Q. Write the difference between heat and temperature.

Q. $50g$ of copper is heated to increase its temperature by $10{}^{\circ }C$. If the same quantity of heat is given to $10g$ of water, then the rise in its temperature is (specific heat of copper $=420J/kg{/}^{\circ }C$)

Q. Same amount of heat is supplied to two liquids A and B. The liquid A shows a greater rise in temperature. What can you say about the heat capacity of A as compared to that of B ?

1. Heat capacity of A is more than that of B
   
2. Heat capacity of A is less than that of B
   
3. Heat capacity of A is same as that of B
   
4. Can't say

Q. Explain the construction of a calorimeter. Draw the necessary figure.

Q. Calculate the amount of heat required (in kJ) to raise the temperature of $40kg$ of compound from $10{}^{\circ }C$ to $35{}^{\circ }C$ . Specific heat capacity of the compound is $50J/k{g}^{\circ }C$.

Q. Land gets heated up easily than the sea during the daytime because the specific heat capacity of the land is that of the sea.

1. less than
2. same as
3. more than

Q. A pure sample of cobalt chloride weighing $1.30$ g was found to contain $0.59$ g cobalt and $0.71$ g chloride on quantitative analysis. If the percentage composition of cobalt $=x\%$ and chloride $=y\%$, then the value of $x$ and $y$ are, respectively:

1. $45.4,54.6$
2. none of the above
3. $40.2,60.4$
4. $50.0,50.2$

Q. Write the difference between heat and temperature.

Q. Which among the following can be used as a coolant in cars?