AIEEE 2006 Mock Test

In ${\text{Fe(CO)}}_5$, the $\text{Fe}-\text{C}$ bond possesses:

The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is:

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If $T_i$ is the initial temperature and $T_f$ is the final temperature, which of the following statements is correct?

In Langmuir’s model of adsorption of a gas on a solid surface:

Rate of a reaction can be expressed by Arrhenius equation as $k=A{e}^{-E_a/RT}$. In this equation, $E_a$ represents: