Question 1 :
If P is the pressure of gas, then the kinetic energy per unit volume of the gas is :

Question 2 :
In van der Waals equation of state of the gas law, the constant {tex}'b'{/tex} is a measure of

Question 6 :
The equilibrium constant for the reactions $A+B\rightleftharpoons AB$ is $0.5$ at $200 K$. The equilibrium constant for the reaction $AB \rightleftharpoons A + B$ would be :<br/>

Question 7 :
For the following three reactions (i),(ii) and (iii),equilibrium constants are given (i) {tex} \mathrm { CO } _ { ( \mathrm { g } ) } + \mathrm { H } _ { 2 } \mathrm { O } _ { ( \mathrm { g } ) } \rightleftharpoons \mathrm { CO } _ { 2 ( g ) } + \mathrm { H } _ { 2 ( \mathrm { g } ) } ; K _ { 1 } {/tex} (ii) {tex} \mathrm { CH } _ { 4 ( \mathrm { g } ) } + \mathrm { H } _ { 2 } \mathrm { O } _ { ( \mathrm { g } ) } = \mathrm { CO } _ { ( \mathrm { g } ) } + 3 \mathrm { H } _ { 2 ( \mathrm { g } ) } ; K _ { 2 } {/tex} (iii) {tex} \mathrm { CH } _ { 4 ( \mathrm { g } ) } + 2 \mathrm { H } _ { 2 } \mathrm { O } _ { ( \mathrm { g } ) } \rightleftharpoons \mathrm { CO } _ { 2 ( \mathrm { g } ) } + 4 \mathrm { H } _ { 2 ( \mathrm { g } ) } ; K _ { 3 } {/tex} Which of the following relation is correct?

Question 8 :
For the reaction<br>{tex} 2 \mathrm { NO } _ { 2 ( \mathrm { g } ) } \rightleftharpoons 2 \mathrm { NO } _ { ( \mathrm { g } ) } + \mathrm { O } _ { 2 ( \mathrm { g } ) } {/tex} {tex} \left( K _ { c } = 1.8 \times 10 ^ { - 6 } \text { at } 184 ^ { \circ } \mathrm { C } \right) {/tex} {tex} ( R = 0.0831 \mathrm { kJ } / ( \mathrm { mol } \mathrm { K } ) ) . {/tex} When {tex} K _ { p } {/tex} and {tex} K _ { c } {/tex} are compared at {tex} 184 ^ { \circ } \mathrm { C } {/tex} it is found that

Question 9 :
Which of the following relation holds true for an equilibrium reaction, if its reaction quotient {tex} ( Q ) = 1 ? {/tex}

Question 10 :
For the reaction {tex} \mathrm { SO } _ { 2 ( g ) } + \frac { 1 } { 2 } \mathrm { O } _ { 2 ( g ) } \rightleftharpoons \mathrm { SO } _ { 3 ( g ) } , {/tex} if {tex} K _ { P } = K _ { C } ( R T ) ^ { x } {/tex} where the symbols have usual meaning then the value of {tex} x {/tex} is (assuming ideality):

Question 11 :
What is the equilibrium expression for the reaction<br> {tex} \mathrm { P } _ { 4 } ( s ) + 5 \mathrm { O } _ { 2 } ( \mathrm { g } ) \rightleftharpoons \mathrm { P } _ { 4 } \mathrm { O } _ { 10 } ( \mathrm { s } ) ? {/tex}

Question 12 :
For the reaction, {tex} \mathrm { CO } ( \mathrm { g } ) + \mathrm { Cl } _ { 2 } ( \mathrm { g } ) \rightleftharpoons \mathrm { COCl } _ { 2 } ( \mathrm { g } ) {/tex} the {tex} K _ { p } / K _ { c } {/tex} is equal to

Question 13 :
For which of the following reactions $K_p$ and $K_c$ are not same?

Question 14 :
Consider the reaction equilibrium<br> {tex} 2 \mathrm { SO } _ { 2 } ( \mathrm { g } ) + \mathrm { O } _ { 2 } ( \mathrm { g } ) \rightleftharpoons 2 \mathrm { SO } _ { 3 } ( \mathrm { g } ) ; \Delta \mathrm { H } ^ { \circ } = - 198 \mathrm { kJ } {/tex}<br>On the basis of Le Chatelier's principle, the condition favourable for the forward reaction is<br>

Question 15 :
The equilibrium constant at {tex}298 \mathrm { K } {/tex} for a reaction {tex} A + B \rightleftharpoons {/tex} {tex} C + D {/tex} is {tex} 100 . {/tex} If the initial concentration of all the four species were {tex} 1\mathrm { M } {/tex} each, then equilibrium concentration of {tex} D ( \text { in mol } {/tex} {tex} \mathrm { L } ^ { - 1 } {/tex} ) will be :

Question 17 :
Warming of NH₄Cl with NaOH in a test tube is an example of

Question 18 :
System in which there is no exchange of matter, work or energy from surroundings is.

Question 19 :
For a spontaneous reaction the <img style='object-fit:contain' src='https://storage.googleapis.com/teachmint/question_assets/JEE%20Main/5e798638adb2ea6185a76b36' height='17' width='15' >G, equilibrium constant (K) and E⁰cell will be respectively

Question 20 :
What is the change in internal energy {tex} \Delta \mathrm U , {/tex} for a system that does {tex}70 \mathrm { J } {/tex} of work as it absorbs {tex}45 \mathrm { J } {/tex} of heat?

Question 21 :
The ionic mobility of alkali metal ions in aqueous solution is maximum for

Question 22 :
Which of the following oxide is expected to react readily with NaOH?

Question 23 :
Which one the following alkaline earth metal sulphates has its hydration enthalpy greater than its <br>lattice enthalpy ?

Question 25 :
The close resemblance between the properties of an element of 2nd period with those of the element of 3rd period belonging to the next group is called: