Thermodynamics

Adiabatic constant of gas is 3/2. If volume of gas initially at \({0}^{\mathrm{o}}\mathrm{C}\) is reduced to one-fourth of the original volume then new temperature is (memory based jee mains shift-1 23/01/2025)

Choose the correct statement for the work done in the expansion and heat absorbed or released when 5 litres of an ideal gas at 10 atmospheric pressure isothermally expands into vacuum until volume is 15 litres :

By using relation
\(∆\mathrm{G}=∆\mathrm{H}-\mathrm{T}∆\mathrm{S}\)

Which of the following is incorrect for spontaneous reaction at a given temperature?

(Memory Based JEE Mains 23/01/2025 ,Shift -2)

Adiabatic constant of gas is 3/2. If volume of gas initially at \({0}^{\mathrm{o}}\mathrm{C}\) is reduced to one-fourth of the original volume then new temperature is (memory based jee mains shift-1 23/01/2025)

The work done during reversible isothermal expansion of one mole of hydrogen gas at \(25^\circ C\) from pressure of 20 atmosphere to 10 atmosphere is:
(Given \(\mathrm{R}=2.0\mathrm{cal}{\mathrm{K}}^{-1}{\mathrm{mol}}^{-1}\))

In a closed insulated container, a liquid is stirred with a paddle to increase the temperature, which of the following is true?

Identify the correct option regarding extensive and intensive property (memory based jee mains shift-2 22/01/2025)

In which of the following processes entropy increases?
A. A liquid evaporates to vapour.
B. Temperature of a crystalline solid lowered from 130 K to 0 K.
C. \(2NaHC{O}_{3(s)}\to N{a}_{2}C{O}_{3(s)}+C{O}_{2(g)}+{H}_{2}{O}_{(g)}\)
D. \(C{l}_{2(g)}\to 2C{l}_{(g)}\)

Choose the correct answer from the options given below:

Which of the following is not correct?

Which of the following is not correct?

In a closed insulated container, a liquid is stirred with a paddle to increase the temperature, which of the following is true?

Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at boiling point of water. Choose the correct option

The standard Gibbs energy \(\left(∆{G}^{^\circ }\right)\) for the following reaction is \(A(s)+{B}^{+2}(aq)⇌{A}^{+2}(aq)+B(s),Kc={10}^{12}at\) (Kc = equilibrium constant)

For an ideal monoatomic gas undergoing an isobaric process, the ratio of \(\frac{∆\mathrm{Q}}{∆\mathrm{U}}\) is (memory based jee mains shift-1 24/01/2025)

For the following reaction at \(\mathrm{300 ~K}\)

\({A}_{2}(g)+3{B}_{2}(g)\to 2A{B}_{3}(g)\)

the enthalpy change is \(\mathrm{+15 ~kJ}\), then the internal energy change is

[Re-NEET 2024]

The combustion of benzene (L) gives\(C{O}_{2}\) (g) and \({H}_{2}O\) (L). Given that heat of combustion of benzene at constant volume is -3263.9 kJ/mol at 25°C, heat of combustion (in kJ/mol) of benzene at constant pressure will be: (R = 8.314J\({K}^{-1}mo{l}^{-1}\))

\(S(g)+\frac{3}{2}{O}_{2}(g)\to S{O}_{3}(g)+2xkcal\\ S{O}_{2}(g)+\frac{1}{2}{O}_{2}(g)\to S{O}_{3}(g)+ykcal\)

The heat of formation of \(S{O}_{2}(g)\) is given by

A liquid when kept inside a thermally insulated closed vessel at 25 degree celsius was mechanically stirred from outside. What will be the correct option for the following thermodynamic parameters?

[JEE Main 2025, 22 Jan (Shift 1)]

If \(C\) (diamond) \(\to C\) (graphite)+X \(kJmo{l}^{-1}\)
\(C(\text{ diamond })+{O}_{2}(g)\to C{O}_{2}(g)+YkJmo{l}^{-1}\)
C (graphite) \(+{O}_{2}(g)\to C{O}_{2}(g)+ZkJmo{l}^{-1}\)

at constant temperature. Then

In the process, pressure of gas is directly proportional to temperature then choose correct option (MEMORY based jee mains shift-1 24/01/2025)

A: Process is isochoric

B: Work done in process is zero

C: Internal energy increases with increase in temperature

Which of the following is not correct?

[JEE Main 2024, 29 Jan (Shift 1)]

In the process, pressure of gas is directly proportional to temperature then choose correct option (MEMORY based jee mains shift-1 24/01/2025)

A: Process is isochoric

B: Work done in process is zero

C: Internal energy increases with increase in temperature

In a closed insulated container, a liquid is stirred with a paddle to increase the temperature, which of the following is true?

Consider the following thermochemical reaction and choose the correct option

\(\mathrm{C}(\mathrm{diamond})\to \mathrm{C}(\mathrm{graphite})+\mathrm{x}\mathrm{KJ}\\ \mathrm{C}(\mathrm{diamond})+{\mathrm{O}}_{2}\to {\mathrm{CO}}_{2}+\mathrm{y}\mathrm{KJ}\\ \mathrm{C}(\mathrm{graphite})+{\mathrm{O}}_{2}\to {\mathrm{CO}}_{2}+\mathrm{z}\mathrm{KJ}\)

29/Jan/25 Evening shift

Identify the correct option regarding extensive and intensive property (memory based jee mains shift-2 22/01/2025)

The correct statement amongst the following is

For an ideal monoatomic gas undergoing an isobaric process, the ratio of \(\frac{∆\mathrm{Q}}{∆\mathrm{U}}\) is (memory based jee mains shift-1 24/01/2025)

Given ionisation enthalpy of element \({\mathrm{E}}_{(\mathrm{g})}\) is 300 kJ / mol and electron gain enthalpy of A,B,C and D gases atoms are -320 kJ / mol,-340 kJ / mol ,-200 kJ / mol and -250 kJ / mol, then what will be the correct order of ionic nature of compounds?

Energy supplied to 1 mole of monoatomic gas is \(48\mathrm{J}\) and changes its temperature by \(2^\circ \mathrm{C}\). Find the work done by gas.