When sodium salt of ethanol is treated with ethyl bromide, the product formed is :

When sodium salt of ethanol is treated with ehtyl bromide, the product formed is

Monosidium acetylide is treated with benzyl bromide. The product formed is

When benzyl chloride is treated with ethanolic KCN, the major product formed is:

When iso-butyl magnesium bromide in dry ether is treated with absolute ethyl alcohol, the products formed are :