Structural isomers Knowledge-Based Download PDF

Questions

1. 1.

   Which of the following open-chain hydrocarbons is a structural isomer of cyclohexane?

   • A) Hexane
   • B) Hex-1-yne
   • C) Hexa-1,4-diene
   • D) Hex-2-ene
2. 2.

   Which of the following hydrocarbons is a chain (skeletal) isomer of pent-1-yne?

   • A) 3-methylbut-1-yne
   • B) pent-2-yne
   • C) penta-1,3-diene
   • D) cyclopentene
3. 3.

   Which of the following hydrocarbons is a position isomer of but-1-ene?

   • A) Cyclobutane
   • B) 2-Methylprop-1-ene
   • C) But-2-ene
   • D) Methylcyclopropane
4. 4.

   How many structural isomers exist for the alkane with the molecular formula $\text{C}_5\text{H}_{12}$?

   • A) 2
   • B) 3
   • C) 4
   • D) 5
5. 5.

   Which of the following pairs of hydrocarbons represents a pair of structural isomers?

   • A) Propane and butane
   • B) Hexane and cyclohexane
   • C) Ethene and ethyne
   • D) Pentane and 2,2-dimethylpropane