Question 1 :
Assertion: The presence of reactants in the closed vessel made of conducting material is an example of a closed system. Reason: In a closed system, there is no exchange of matter but exchange of energy is possible between the system and the surroundings.

Question 4 :
$C_v$ for helium gas $(He)$ is $(in J \ mol^{-1} \ K^{-1})$

Question 6 :
Assertion: Thermodynamics process in nature are irreversible. Reason: Dissipative effects cannot be eliminated

Question 7 :
For the gas phase exothermic reaction, $A_2+B_2 \rightleftharpoons C_2$, carried out in a closed vessel, the equilibrium moles of $A_2$, can be increased by : 

Question 8 :
Which of the following property is not a thermodynamic property of the system?

Question 9 :
When the system is said to be in a state of thermodynamic equilibrium?

Question 11 :
Assertion: There cannot be chemical equilibrium in an open system. Reason: There is no fixed mass in an open system.

Question 12 :
The state of gas can be described by quoting the relationship between_____________.<br>

Question 13 :
Two reactions involving water are shown.<br>X anhydrous cobalt (II) chloride + water $\rightarrow$ hydrated cobalt(II) chloride<br>Y iron + oxygen + water $\rightarrow$ rust<br>Which reactions are reversible by heating?

Question 15 :
An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If $T_i$ is the initial temperature and $T_f$ is the final temperature , which of the following is correct?

Question 16 :
In a laboratory, liquid in a thermally insulated container is stirred for one hour by a mechanical linkage to a stirrer, for this process:

Question 17 :
An insulated container of gas has two chambers separated by an insulating partition. One of the chambers has volume $V_1$ and contains ideal gas at pressure $P_1$ and temperature $T_1$.&#160;<br/>The other chamber has volume $V_2$ and contain same ideal gas at pressure $P_2$ and temperature $T_2$.&#160;If the partition is removed without doing any work on the gas, the final equilibrium temperature of the gas in the container will be:

Question 18 :
"Heat cannot by itself flow from a body at lower temperature to a body at higher temperature" is a statement of the consequence of

Question 19 :
Two closed vessel $A$ and $B$ of equal volume of $8.21L$ are connected by a narrow tube of negligible volume with open valve. The left hand side container id found to contain $3\ mole \, CO_2$ and $2\ mole$ of $He$ at $400K$. What is the partial pressure of $He$ in vessel $B$ at $500K$?