Which of the following compounds is isomeric with methyl vinyl ether ?

Which of the following compounds is isomeric with propanal?

A compound not isomeric with diethyl ether is:

The compound which is isomeric with dimethyl ether is

Compound wich is not isomeric with diethly ether is

Which of the following compound on treatment with methanol is potassium methoxide will yield methyl vinyl ether ?

Which of the following compounds is not formed when a mixture of methyl bromine and ethyl bromine is treated with sodium metal in the presence of dry ether ?

Which of the following compounds is not formed when a mixture of methyl bromide and ethyl bromide is treated with sodium metal in the presence of dry ether?