Metamerism in ethers

The compounds ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{OC}}_2{\mathrm{H}}_5 \mathrm{and} {\mathrm{CH}}_3{\mathrm{OCH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$ are:

Ethers are the functional isomers of 

Identify the metamer of diethyl ether in the following organic compounds.

Explain metamerism in ethers.

Dimethyl ether and ethyl alcohol are 

Which of the following compounds is not isomeric with Ethoxyethane?

What is metamerism? Give the structure and $\mathrm{IUPAC}$ name of metamers of $2$-Methoxypropane.

Give the structure and $\mathrm{IUPAC}$ names of all metamers represented by formula ${\mathrm{C}}_5{\mathrm{H}}_{12}\mathrm{O}$.

How many isomeric compounds can be represented by formula ${\mathrm{C}}_4{\mathrm{H}}_{10}\mathrm{O}$ ?

Methoxy methane and ethanol are

Ethers are isomeric with

How many constitutionally isomeric ether are there in a formula of C₄H₁₀O ?