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1. Some basic concept of chemistry — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry1. Some basic concept of chemistry1 Mark
MCQ
If two compounds have the same empirical formula but different molecular formula, they must have
  • A
    Different percentage composition
  • ✓
    Different molecular weights
  • C
    Same viscosity
  • D
    Same vapour density
✓

Answer

Correct option: B.
Different molecular weights
b
If two compounds have the same empirical formula but different molecular formula, they must have different molecular weights.

For example, $CH _2 O$ and $C _6 H _{12} O _6$ have the same empirical formula but different molecular formula, they have different molecular weights.

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