NTA JEE Main 2025 April 4th Shift 2

The correct order of $$[FeF_6]^{3-}$$, $$[CoF_6]^{3-}$$, $$[Ni(CO)_4]$$ and $$[Ni(CN)_4]^{2-}$$ complex species based on the number of unpaired electrons present is :

Consider the given data :
(a) $$HCl(g) + 10H_2O(l) \rightarrow HCl \cdot 10H_2O$$, $$\Delta H = -69.01$$ kJ mol$$^{-1}$$
(b) $$HCl(g) + 40H_2O(l) \rightarrow HCl \cdot 40H_2O$$, $$\Delta H = -72.79$$ kJ mol$$^{-1}$$
Choose the correct statement :

Consider the ground state of chromium atom (Z = 24). How many electrons are with Azimuthal quantum number $$l = 1$$ and $$l = 2$$ respectively?

Given below are two statements :
Statement (I) : The first ionisation enthalpy of group 14 elements is higher than the corresponding elements of group 13.
Statement (II) : Melting points and boiling points of group 13 elements are in general much higher than those the corresponding elements of group 14.
In the light of the above statements, choose the most appropriate answer from the options given below :

Consider the following plots of log of rate constant k (log k) vs $$\frac{1}{T}$$ for three different reactions. The correct order of activation energies of these reactions is :

'X' is the number of electrons in $$t_{2g}$$ orbitals of the most stable complex ion among $$[Fe(NH_3)_6]^{3+}$$, $$[Fe(Cl)_6]^{3-}$$, $$[Fe(C_2O_4)_3]^{3-}$$ and $$[Fe(H_2O)_6]^{3+}$$. The nature of oxide of vanadium of the type $$V_2O_x$$ is:

The elements of Group 13 with highest and lowest first ionisation enthalpies are respectively:

Consider the following molecule (X). The structure of X is

Given below are two statements:
Statement (I) : for 

, all three possible structures may be drawn.

Statement (II) : Structure III is most stable, as the orbitals having the lone pairs are axial, where the $$lp-bp$$ repulsion is minimum.
In the light of the above statements, choose the most appropriate answer from the options given below:

Half life of zero order reaction $$A \rightarrow$$ product is 1 hour, when initial concentration of reaction is 2.0 mol L$$^{-1}$$. The time required to decrease concentration of A from 0.50 to 0.25 mol L$$^{-1}$$ is: