Question 1 :
The boiling point of water on celsius scale will be measured as
Question 2 :
If a graph is plotted taking the temperature in Fahrenheit along the Y-axis, and the corresponding temperature in Celsius along the X-axis, then the graph will be a straight line,
Question 3 : <p class="wysiwyg-text-align-left">A gas at temperature 27$^{0}$C and pressure 30 atmospheres is allowed to expand to one atmospheric pressure. If the volume becomes 10 times its initial volumes, the final temperature becomes :<br/></p>
Question 4 :
A wooden spoon is dipped in a cup of ice cream. It's another end
Question 5 :
Under which of the following conditions is the law $pV=RT$ obeyed most closely by a real gas?
Question 6 :
If two systems are in thermal equilibrium, then they should have same temperature.
Question 9 :
A container is partially filled with hot water, sealed and left to cool. Which statements are correct?<br>$1$. As the temperature decreases, water molecules lose kinetic energy.<br>$2$. As the temperature decreases, more water molecules move from vapour to liquid.<br>$3$. As the temperature decreases, the vapour pressure of the water decreases.<br>
Question 10 : <p class="wysiwyg-text-align-left">16 gm of $O_{2}$ gas and x gm of $H_{2}$ gas occupy the same volume at the same temperature and pressure. Then x is :<br/></p>
Question 11 :
If the output energy is$ 1000 J$ and input energy is $200 J $the net output is _____ $J$.<br/>
Question 12 :
Assertion: Two bodies at thermal equilibrium may or may not have equal heat.
Reason: Two bodies at thermal equilibrium have same temperature.
Question 13 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">One litre of helium under a pressure of 2 atm <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">and at </span></span><span style="font-size: 14px;">27$^{0}$</span><i style="font-size: 14px;">C </i><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">is heated until its pressure and </span></span>volume are doubled. The final temperature attained by the gas is</p></span></span>
Question 14 :
A wall has two layers A and B made of different materials. The thickness of both layers is the same. The thermal conductivity of A and B are $K_A$ and $K_B$ such that $K_A$ = $3K_B$. The temperature across the wall is $20 ^\circ C$. In thermal equilibrium
Question 15 :
Two containers of equal volume contain the same gas at pressures $P_1$ and $P_2$ and absolute temperatures $T_1$ and $T_2$, respectively. On joining the vessels, the gas reaches a common pressure $P$ and common temperature $T$. The ratio $\displaystyle\frac{P}{T}$ is equal to
Question 16 :
One mole of a gas at a pressure 2 Pa and temperature 27$^o$C is heated till both pressure and volume are doubled. What is the temperature of the gas?
Question 17 :
The temperature $\left( T \right) $ of two samples of the same substance with masses ${ m }_{ 1 }$ and ${ m }_{ 2 }$ and temperatures ${ T }_{ 1 }$ and ${ T }_{ 2 }$, when added together is _____.
Question 18 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"></span></span><p class="wysiwyg-text-align-left">Which of the following processes will quadruple <span>the pressure</span></p><p class="wysiwyg-text-align-left">a) Reduce V to half and double T</p><p class="wysiwyg-text-align-left">b) Reduce V to 1/8th and reduce T to half</p><p class="wysiwyg-text-align-left">c) Double V and half T</p><p>d) Increase both V and T to double the values</p>
Question 19 : <span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small"><p class="wysiwyg-text-align-left">Two gases A&B having same pressure P, volume V and absolute temperature T are mixed. If the mixture has volume and temperature as V & T respectively then the pressure of mixture is</p></span></span>
Question 20 : <p class="wysiwyg-text-align-left"><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">28gm of $N_2$</span></span><span class="wysiwyg-font-size-xx-small"><span class="wysiwyg-font-size-xx-small"> </span></span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">gas is contained in a flask at a </span></span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">pressure of 10atm and at a temperature of 57$^{0}$</span></span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">C. </span></span><span>It is found that due to leakage in the flask, the </span><span>pressure is reduced to half and the temperature </span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">reduced to 27$^{0}$</span></span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">C. The quantity of N$_{2}$</span></span><span class="wysiwyg-font-size-xx-small"><span class="wysiwyg-font-size-xx-small"> </span></span><span class="wysiwyg-font-size-small"><span class="wysiwyg-font-size-small">gas that </span></span><span>leaked out is</span></p>
Question 21 :
Liquid helium is stored at its boiling point $(4.2 K)$ in a spherical can, separated by a vacuum space from surrounding shield which is maintained at the temperature of liquid nitrogen $(77 K).$ If the can is $0.1 m$ in radius and is blacked on the outside so that it acts as a black body, how much helium boils away per hour?<br/>(Latent heat of vaporization is $21 kJ/kg$)
Question 22 :
The increase of pressure on ice $\rightleftharpoons$ water system at constant temperature will lead to:
Question 23 :
An ideal gas can be expanded from an initial state to a certain volume through two different processes (i) $PV^2 = constant\:and\:(ii)P = KV^2$ where K is a positive constant. Based on the given situation, choose the correct statements<br>
Question 24 :
Two identical rods of a mental are welded in series then 20 cal of heat flows through them in 4 minute. If the rods are welded in parallel then same amount of heat will flow in
Question 25 :
A rigid container has a hole in its wall. When the container is evacuated, its weight is 100 gm. When someair is filled in it at 27C, its weight becomes 200 gm. Now the temperature of air inside is increased by $\Delta$ T, the weight becomes 150 gm. $\Delta$ T should be :
