Which compound is not the isomer of `3`-Ethyle`-2`- methylpentane?

3-methylpentane

Which of the following substances is not an isomer of 3-ethyl 2-methyl pentane?

Which of the following substances is not an isomer of 3-ethyl 2-methyl pentane ?

Which one of the compound is not isomers of others?

Which one of the compound is not isomers of others?

Write the structure for the compounds having the IUPAC names : (a) 3-Ethyl-2-methylpentane " " (b) 2, 3, 5-Trimethylhexane (c) 2,3,5-Trimethyl-4-propylheptane

Write the structural formulas for the following compound whose iupac names are given: 3-ethyl-2-methylpentane