Which of the following hydrides of Group $16$ elements has highest reducing property?

Identify the shape of $\text{IF}_5$ molecule from the following options.

According to the kinetic molecular theory of gases, the average kinetic energy of gas molecules:

Calculate the enthalpy change for the following reaction, using given bond energy (kJ/mol)
(C-H = $414$, H-O = $463$, H-Cl = $431$, C-Cl = $326$ and C-O = $335$)
$\text{CH}_3\text{OH}_{(g)} + \text{HCl}_{(g)} \rightarrow \text{CH}_3\text{Cl}_{(g)} + \text{H}_2\text{O}_{(g)}$