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Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds1 Mark
Question
An unsaturated hydrocarbon having a triple covalent bond has 50 hydrogen atoms in its molecule. The number of carbon atoms in its molecule will be:
  1. 24
  2. 25
  3. 26
  4. 28
✓

Answer

  1. 26

Explanation:

The general formula for unsaturated hydrocarbons with triple bond, is CnH2n - 2. Where 'n' is the number of atoms in one molecule. If the number of hydrogen atoms in its molecule is 50, then the number of carbon atoms should be 26 (2n - 2 = 50; therefore, n = 26).

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