The oxygen atom in an ether is:

The $C - O - C$ bond angle in ethers is approximately -

Acetic anhydride reacts with diethyl ether in the presence of anhydrous $AlCl_3$ to form:

Methyl vinyl ether,$H_2C=CH-OCH_3$,reacts with $Br_2/CH_3OH$. If methanol is reacting as water would,and if this reaction follows a typical mechanism of electrophilic addition,what would be the expected product?

Which among the following does $NOT$ undergo Williamson's synthesis?

$(CH_3)_3C-CH(O)CH_2 + CH_3SNa \xrightarrow{C_2H_5OH} ?$
The product formed is: