AIEEE 2008 PYQ Mock Test

Which one of the following constitutes a group of isoelectronic species?

Which one of the following pairs of species have the same bond order?

The ionization enthalpy of hydrogen atom is $1.312\times 10^6\text{J/mol}$. The energy required to excite the electron in the atom from $n=1$ to $n=2$ is:

Which one of the following is the correct statement?

Given $E_{{\text{Cr}}^{3+}/\text{Cr}}^{\circ }=-0.72\text{V}$ and $E_{{\text{Fe}}^{2+}/\text{Fe}}^{\circ }=-0.42\text{V}$. The potential for the cell $\text{Cr}|{\text{Cr}}^{3+}(0.1\text{M})||{\text{Fe}}^{2+}(0.01\text{M})|\text{Fe}$ is: