MOCK TEST-III - IIT JAM MCQ

Of the following inequalities, the criterion/criteria for spontaneity of a chemical reaction is/are:

(I) (ΔG)_{T, P} < 0                               (II) (ΔU)_{S, V} > 0              (III) (ΔS)_{U, V} > 0

The experimental ionization energies of hydrogen and helium atoms in their ground states are respectively, 13.6 eV and 24.6 eV. The ground state energy of helium atom, in eV, is:

The correct order of acidic nature of these carboxylic acids is:

Which among the following pairs of reactions has the most favourable equilibrium constant?

The correct order of acidic nature of the following compounds is:

(I)            (II)         (III)   (IV) 

The two lines A and B shown in the graph plot the de-Broglie wave length (λ) as function of (V is the accelerating potential) for two particles having the same charge. Which of the two represents the particle of heavier mass:

Consider the following radial distribution function diagrams. Which of the following has correct matching of curve and orbitals:

ψ = Nr (6–Zr)^–Zr/3 cosθ, is a proposed hydrogenic wave function, where

Z = Atomic number
r = radial distance from the nucleus, θ = azimuthal angles, N is a constant. The incorrect statement about ψ is:

For which of the following process, q = ΔU?

One mole of a non-ideal gas undergoes a change of state (2.0 atm, 3.0 L, 95 K)   (4.0 atm, 5.0 L, 245 K) with a change in internal energy, ΔU = 30.0 L atm. The change in enthalpy (ΔH) of the process in L atm is:

The electronic configurations that have orbital angular momentum contribution in an octahedral environment are:

The geometries of Ni(CO)₄ and [NiCl₄]^2– respectively are:

MnCr₂O₄ is:

The correct order of acidity among,

For tetrahedral complexes, which always exhibit high spin states, the maximum CFSE (Crystal Field Stabilization energy) is:

The plot of versus T (where is molar magnetic susceptibility and T is the temperature) for a paramagnetic complex which strictly follows Curie equation is:

The spin-only (μ_S) and spin plus orbital (μ_S+L) magnetic moment of [CrCl₆]^3– are:

The red colour of ruby is due to:

When one mole of monoatomic ideal gas at TK undergoes adiabatic change under a constant external pressure of 1 atm changes volume from 1 litre to 2 litre. The final temperature in Kelvin would be:

For a given reaction, ΔH = 35.5 kJ mol^–1 and ΔS = 83.6 JK^–1 mol^–1. The reaction is spontaneous at (Assume that ΔH and ΔS do not vary with temperature):

The 2s-orbital of H-atom has a radial node at 2a₀ because ψ_2s is proportional to:

Consider a particle in its ground state confined to a one-dimensional box in the interval (0, 8). The probability of finding it between   and    is close to (  is sufficiently small so that the wave function can be taken as a constant in this interval)

Which of the functions below is a common eigen function of   and    operators?

A phase transition process is always:

Match the items in the three columns.

The correct answer is

ΔH of a reaction is equal to slope of the plot of:

Arrange the following compounds in order of C_a—C_b bond strength:

(I)                                              (II) 

(III)                                             (IV)