An organic compound with the molecular formula $C_4H_{10}O$ does not react with sodium metal. Upon reaction with excess $HI$,it yields only two types of halides. Identify the compound.

Which of the following compounds when heated with $CO$ at $150^{\circ} C$ and $500 \ atm$ pressure in the presence of $BF_3$ forms ethyl propionate?

An ether $(A)$,$C_5H_{12}O$,when heated with excess of hot concentrated $HI$ produced two alkyl halides which when treated with $NaOH$ yielded compounds $(B)$ and $(C)$. Oxidation of $(B)$ and $(C)$ gave a propanone and an ethanoic acid respectively. The $IUPAC$ name of the ether $(A)$ is

For the given reaction,$A$ and $B$ are respectively:

This reaction,$CH_3-C(CH_3)_2-ONa + CH_3-CH_2-Cl \xrightarrow{-NaCl} CH_3-C(CH_3)_2-O-CH_2-CH_3$ is called:

When is methyl tert-butyl ether formed?