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Hydrocarbons — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryHydrocarbons1 Mark
MCQ
Which of the following is Aromatic Hydrocarbon?
  • A
    C2​H2​
  • B
    C3​H8​
  • C
    C5​H12​
  • D
    C6​H6​
✓

Answer

  1. C6​H6​

Explanation:

C2​H2​ is called acetylene. It is an aliphatic alkyne. So it is not aromatic.

C3​H8​​ is called propane. It is a simple alkane. So, it is not aromatic.

C5​H12​ is called pentane. It is a simple alkane. So, It is also not aromatic.

C6​H6​​ is a cyclic, planar, and has a complete conjugated system. Also, it has 6π electrons. Hence it follows Huckel’s rule. Therefore, it is aromatic.

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