JEE Advanced 2022 Paper 2 Online

MCQ (More than One Correct Answer)

-2

The correct option(s) about entropy (S) is(are)

$[\mathrm{R}=$ gas constant, $\mathrm{F}=$ Faraday constant, $\mathrm{T}=$ Temperature $]$

For the reaction, $\mathrm{M}(s)+2 \mathrm{H}^{+}(a q) \rightarrow \mathrm{H}_{2}(g)+\mathrm{M}^{2+}(a q)$, if $\frac{d E_\text{cell}}{d T}=\frac{R}{F}$, then the entropy change of the reaction is $\mathrm{R}$ (assume that entropy and internal energy changes are temperature independent).

The cell reaction, $\operatorname{Pt}(s) \mid \mathrm{H}_{2}(g, 1$ bar $)\left|\mathrm{H}^{+}(a q, 0.01 \mathrm{M}) \| \mathrm{H}^{+}(a q, 0.1 \mathrm{M})\right| \mathrm{H}_{2}(g, 1 \mathrm{bar}) \mid \operatorname{Pt}(s)$, is an entropy driven process.

For racemization of an optically active compound, $\Delta \mathrm{S}>0$.

$\Delta \mathrm{S}>0$, for $\left[\mathrm{Ni}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}+3$ en $\rightarrow\left[\mathrm{Ni}(\mathrm{en})_{3}\right]^{2+}+6 \mathrm{H}_{2} \mathrm{O}$ (where en $=$ ethylenediamine).

JEE Advanced 2021 Paper 1 Online

MCQ (More than One Correct Answer)

-2

An ideal gas undergoes a reversible isothermal expansion from state I to state II followed by a reversible adiabatic expansion from state II to state III. The correct plot(s) representing the changes from state I to state III is (are)

(p : pressure, V : volume, T : temperature, H : enthalpy, S : entropy)

JEE Advanced 2021 Paper 1 Online Chemistry - Thermodynamics Question 19 English Option 1

JEE Advanced 2021 Paper 1 Online Chemistry - Thermodynamics Question 19 English Option 2

JEE Advanced 2021 Paper 1 Online Chemistry - Thermodynamics Question 19 English Option 3

JEE Advanced 2021 Paper 1 Online Chemistry - Thermodynamics Question 19 English Option 4

JEE Advanced 2020 Paper 1 Offline

MCQ (More than One Correct Answer)

-2

In thermodynamics, the p-V work done is given by

$$w = - \int {dV{p_{ext}}} $$

For a system undergoing a particular process, the work done is

$$w = - \int {dV\left( {{{RT} \over {V - b}} - {a \over {{V^2}}}} \right)} $$

This equation is applicable to a

system that satisfies the van der Walls' equation of state

process that is reversible and isothermal

process that is reversible and adiabatic

process that is irreversible and at constant pressure

JEE Advanced 2019 Paper 1 Offline

MCQ (More than One Correct Answer)

-1

Choose the reaction(s) from the following options, for which the standard enthalpy of reaction of equal to the standard enthalpy of formation.

2C(g) + 3H₂(g) $$ \to $$ C₂H₆(g)

2H₂(g) + O₂(g) $$ \to $$ 2H₂O(l)

$${3 \over 2}$$O₂(g) $$ \to $$ O₃(g)

$${1 \over 8}$$S₈(s) + O₂(g) $$ \to $$ SO₂(g)

JEE Advanced Subjects