The Kelvin Scale

Q. The Fahrenheit and Kelvin scales of temperature will give the same reading at

1. 574.25
2. 313
3. 732.75
4. – 40

Q.

What is the temperature of the Fahrenheit scale corresponding to $30\mathrm{degrees}\mathrm{Celsius}$?

Q.

What is the difference between celcius and centigrade

Q.

Can total entropy be negative?

Q.

On converting $25°\mathrm{C}$, $38°\mathrm{C}$ and $66°\mathrm{C}$ to the kelvin scale, the correct sequence of temperatures will be

1. $298\mathrm{K},311\mathrm{K}$ and $339\mathrm{K}$

2. $298\mathrm{K},300\mathrm{K}$ and $338\mathrm{K}$

3. $273\mathrm{K},278\mathrm{K}$ and $543\mathrm{K}$

4. $298\mathrm{K},310\mathrm{K}$ and $338\mathrm{K}$

Q. A graph for an ideal gas at constant volume is plotted by taking pressure along y - axis and centigrade temperature along x - axis as shown in the figure below. Find the x intercept of the graph.

1. $-273.15{}^{\circ }\text{C}$
2. $-273.15\text{K}$
3. $-273\text{K}$
4. $-273{}^{\circ }\text{C}$

Q. Temperature of an object increases by $40$ degrees on the Celsius scale. What are corresponding changes on the Fahrenheit scale and absolute scale?

1. ${40}^{\circ }\text{F},72\text{K}$
2. ${72}^{\circ }\text{F},40\text{K}$
3. ${22.2}^{\circ }\text{F},40\text{K}$
4. ${40}^{\circ }\text{F},-22.2\text{K}$

Q. Absolute scale of temperature is known as____ (Celsius scale, Kelvin scale)

Q.

The outside air temperature is $30°\mathrm{F}$, what is the temperature in Kelvin?

Q.

The symbol of degree Celsius is:

1. $°$C

2. $°$F

3. K

4. $°$K

Q. Convert ${25}^{0}C$ to Kelvin scale:

1. $298.15K$
2. $398.15K$
3. $98.15K$
4. $198.15K$

Q. Centigrade (Celsius) scale can be converted into Kelvin scale by formula

1. ${\Omega }^{0}C=$ Temperature in Kelvin $+273.15$
2. ${\Omega }^{0}C=$ Temperature in Kelvin $-273.15$
3. ${\Omega }^{0}C=$ Temperature in Fahrenheit $+273.15$
4. ${\Omega }^{0}C=$ Temperature in Fahrenheit $-273.15$

Q. During an experiment, an ideal gas is found by obey a condition $\frac{P^2}{\rho }=\text{constant}\left[\rho \text{is density of the gas}\right]$. The gas is initially at temperature $T$, pressure $P$ and density $\rho$. If the gas expands such that density changes to $\frac{\rho }{2}$, choose the correct statements.

1. The pressure of the gas changes to $\sqrt{2}P$
2. The temperature of the gas changes to $\sqrt{2}T$
3. The graph of the above process on the $P-T$ diagram is parabola.
4. The graph of the above process on the $P-T$ diagram is hyperbola.

Q. Which of the following is NOT a Absolute Temperature Scale?

1. Celsius Scale
2. Kelvin Scale
3. None of these
4. Rankine Scale

Q.

A liquid boils at 100°C. Its temperature can also be expressed as:

1. 87.5°F

2. 373K

3. 173K

4. 132°F

Q. Assertion :The lowest attainable temperature is absolute zero, i.e., $0K=-{273.15}^{o}C.$ Reason: Size of each degree on Kelvin scale is same as that on Celsius scale.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. What is the difference between resistance and reactance?

Q.

temperature is measured in how many types name them?

Q. Do pressure change boiling point and freezing point ??

Q.

Let $\overrightarrow{v},v_{rms}$ and $v_2$ respectively denote the mean speed, root mean square speed and most probable speed of the molecules in an ideal monoatomic gas at absolute temperature T. The mass of a molecule is m. Then

1. 

2. 

3. 

4. 

Q. The temperature dependence of resistance of Cu and undoped Si, in the temperature range $300\text{K}\text{to}400\text{K}$, is best described by :

1. Linear increase for Cu, exponential increase for Si
2. Linear increase for Cu, exponential decrease for Si
3. Linear decrease for Cu, linear decrease for Si
4. Linear increase for Cu, linear increase for Si

Q.

Who discovered Kelvin scale of temperature?

Q. In a problem, we have a situation,
P1V1/T1=P2V2/T2
In the question, T1 and T2 are given in degree Celsius,
V1 , V2 and P1 are also given,
In order to find P2,
Is it necessary to convert T1 and T2 to Kelvin scale?

Q. Kelvin is the standard temperature scale.

Q. Find out the temperature of absolute zero kelvin.

1. $0^{o}C$
2. ${100}^{o}C$
3. ${273}^{o}C$
4. $-{273}^{o}C$
5. $-{100}^{o}C$

Q.

Numerical value of Standard temperature is _______.

Q.

Which of the following conditions is true if enthalpy is negative and entropy is positive?

1. G is negative at high temperature

2. G is negative at low temperature

3. free energy is always negative

4. free energy is never negative.

Q. A temperature difference of ${27}^{\circ }C$. in the Kelvin scale is?

1. 27 K
2. 300 K
3. $-246K$
4. zero

Q. The boiling point of water in Kelvin scale is:

1. $73.15K$
2. $373.15K$
3. $173.15K$
4. $273.15K$

Q.

On the Celsius scale the absolute zero i.e. $0^{\circ }K$ is equal to_____.

1. $0^{\circ }C$

2. $-{32}^{\circ }C$

3. ${100}^{\circ }C$

4. $-{273.15}^{\circ }C$