AIEEE 2010 PYQ Mock Test

The energy required to break one mole of $\text{Cl}-\text{Cl}$ bonds in ${\text{Cl}}_2$ is $242{\text{kJ mol}}^{-1}$. The longest wavelength of light capable of breaking a single $\text{Cl}-\text{Cl}$ bond is ($c=3\times 10^8{\text{m s}}^{-1}$ and $N_A=6.02\times 10^{23}{\text{mol}}^{-1}$):

Ionisation energy of ${\text{He}}^{+}$ is $19.6\times 10^{-18}{\text{J atom}}^{-1}$. The energy of the first stationary state ($n=1$) of ${\text{Li}}^{2+}$ is:

Consider the following bromides:

The correct order of ${\text{S}}_{\text{N}}1$ reactivity is:

Which one of the following has an optical isomer? (en = ethylenediamine)

On mixing, heptane and octane form an ideal solution. At $373\text{K}$, the vapour pressures of the two liquid components (heptane and octane) are $105\text{kPa}$ and $45\text{kPa}$ respectively. Vapour pressure of the solution obtained by mixing $25.0\text{g}$ of heptane and $35\text{g}$ of octane will be (molar mass of heptane $=100{\text{g mol}}^{-1}$ and of octane $=114{\text{g mol}}^{-1}$):