Isomers are compounds with:

Practice MCQ for SSC, UPSC, RRB Exams

A. Same chemical properties A.
B. Different molecular formulae B.
C. Same molecular formula but different structures C.
D. Different chemical elements D.

Correct Answer: C সঠিক উত্তর: C

Explanation ব্যাখ্যা

Isomers are compounds that have:
  • The same molecular formula (same number and type of atoms)
  • But different structural arrangements of atoms

  • Types of Isomers:
    1. Structural (or constitutional) isomers
      • Atoms are connected in different orders
      • Example: Butane (straight chain) vs Isobutane (branched)
    2. Stereoisomers
      • Same connectivity, but different spatial arrangement
      • Includes geometrical (cis-trans) and optical isomers
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