1.
A person is suffering from fever of 103 \(^oF\text{.}\) What is his body temperature on the Celsius scale?
Exercises 4.4 Exercise
2.
The temperature of outer space is about 3K. What is this temperature on the
- Celsius scale
- Fahrenheit scale
3.
How much heat is needed to raise the temperature of 1.0kg of water from room temperature 20 \(^oC\) to its boiling point 100 \(^oC\text{.}\)
4.
What makes 1 g of water steam at 100 \(^oC\) more dengerous than 1 g of water liquid at 100 \(^oC\text{.}\)
5.
How does heat transfer occur in a gas?
6.
How does heat transfer occur in avacuum?
7.
Chose the correct option: The fluid at the bottom of the container is
- under less pressure than the pressure at the top.
- under the same pressure than the pressure at the top.
- under more pressure than the pressure at the top.
- any one of the above, depending upon circumstances.
8.
Chose the correct option: On molecular level, heat is
- kinetic energy.
- potential energy.
- sum of kinetic and potential energy.
- any one of the above, depending upon circumstances.
9.
How much cooking oil you can put in a container of 0.2m long, 0.1m wide, and 0.3 m high, if the density of the oil is \(750 kg/m^3\text{.}\)
10.
A water can is heated to boiling and then sealed when it is still hot. What reason can you give for the can collapsing as it cools?
11.
Two balls of identical volumes but different masses are being dropped from the top of a skyscraper. If air resistance acts the same on both balls which will reach on the ground first or will they reach it together?
12.
What is the SI unit of temperature?
- Kelvin
- Celsius
- Fahrenheit
- Rankine
13.
What is absolute zero?
- The temperature at which water freezes
- The temperature at which water boils
- The lowest possible temperature that can be reached
- The highest possible temperature that can be reached
14.
Which of the following is not a way to measure temperature?
- Thermometer
- Pyrometer
- Barometer
- Thermocouple
Answer.
c.
15.
What is the boiling point of water in Celsius?
- \(\displaystyle 0^° C\)
- \(\displaystyle 100^° C\)
- \(\displaystyle 212^° C\)
- \(\displaystyle 373^° C\)
16.
What is viscosity?
- The ability of a fluid to flow.
- The ability of a fluid to resist flow.
- The ability of a fluid to change shape.
- The ability of a fluid to change volume.
Answer.
b.
17.
Which of the following factors affects the buoyant force on an object?
- The volume of the object.
- The density of the fluid.
- The depth of the fluid.
- All of the above.
Answer.
d.
18.
Which of the following is an example of an object that will float in water?
- A lead weight
- A wooden log
- A rock
- A steel ball
19.
What is the relationship between the temperature of a gas and the average kinetic energy of its molecules?
- They are directly proportional.
- They are inversely proportional.
- They are not related.
- It depends on the pressure of the gas.
Answer.
a.
20.
What is the relationship between the pressure of a gas and the volume of its container, according to Boyle’s law?
- They are directly proportional.
- They are inversely proportional.
- They are not related.
- It depends on the temperature of the gas.
Answer.
b.
