1
JEE Main 2022 (Online) 28th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following relation is not correct?

A
$$\Delta \mathrm{H}=\Delta \mathrm{U}-\mathrm{P} \Delta \mathrm{V}$$
B
$$\Delta \mathrm{U}=\mathrm{q}+\mathrm{W}$$
C
$$\Delta \mathrm{S}_{\text {sys }}+\Delta \mathrm{S}_{\text {surr }} \geqslant 0$$
D
$$\Delta \mathrm{G}=\Delta \mathrm{H}-\mathrm{T} \Delta \mathrm{S}$$
2
JEE Main 2022 (Online) 30th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

$$\Delta$$G$$^\circ$$ vs T plot for the formation of MgO, involving reaction

2Mg + O2 $$\to$$ 2MgO, will look like :

A
JEE Main 2022 (Online) 30th June Morning Shift Chemistry - Thermodynamics Question 47 English Option 1
B
JEE Main 2022 (Online) 30th June Morning Shift Chemistry - Thermodynamics Question 47 English Option 2
C
JEE Main 2022 (Online) 30th June Morning Shift Chemistry - Thermodynamics Question 47 English Option 3
D
JEE Main 2022 (Online) 30th June Morning Shift Chemistry - Thermodynamics Question 47 English Option 4
3
JEE Main 2022 (Online) 27th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List-I with List-II.

List - I List - II
(A) Spontaneous process (I) $$\Delta H < 0$$
(B) Process with $$\Delta P = 0$$, $$\Delta T = 0$$ (II) $$\Delta {G_{T,P}} < 0$$
(C) $$\Delta {H_{reaction}}$$ (III) Isothermal and isobaric process
(D) Exothermic Process (IV) [Bond energies of molecules in reactants] $$ - $$ [Bond energies of product molecules

Choose the correct answer from the options given below :

A
(A) - (III), (B) - (II), (C) - (IV), (D) - (I)
B
(A) - (II), (B) - (III), (C) - (IV), (D) - (I)
C
(A) - (II), (B) - (III), (C) - (I), (D) - (IV)
D
(A) - (II), (B) - (I), (C) - (III), (D) - (IV)
4
JEE Main 2022 (Online) 25th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

At 25$$^\circ$$C and 1 atm pressure, the enthalpy of combustion of benzene (I) and acetylene (g) are $$-$$ 3268 kJ mol$$-$$1 and $$-$$1300 kJ mol$$-$$1, respectively. The change in enthalpy for the reaction 3 C2H2(g) $$\to$$ C6H6 (I), is :

A
+324 kJ mol$$-$$1
B
+632 kJ mol$$-$$1
C
$$-$$ 632 kJ mol$$-$$1
D
$$-$$ 732 kJ mol$$-$$1
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