MCQ
Which compound is different from the others?
  • A
    Methyl ethyl ketone
  • B
    Pentan - 2 - one
  • C
    2 - Pentanone
  • D
    Methyl propyl ketone

Answer

  1. Methyl ethyl ketone

Explanation:

Methyl ethyl ketone $(\text{CH}_3-\text{ C}-\text{CH}_2-\text{CH}_3)\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}$ is different from the others.

Methyl ethyl ketone (also called butanone) contains 4C atoms.

Pentan-2-one, 2-pentanone and methyl propyl ketone are different names of same compound $(\text{CH}_3-\text{ C}-\text{CH}_2-\text{CH}_2-\text{CH}_3)\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ||\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{O}$which contains 5C atoms.

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