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Carbon and its Compounds — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceCarbon and its Compounds1 Mark
MCQ
Structural formula of ethyne is :
  • ✓
    $\text{H}-\text{C}\equiv\text{C}-\text{H}$
  • B
    $\text{H}_3-\text{C}\equiv\text{C}-\text{H}$
  • C
  • D
✓

Answer

Correct option: A.
$\text{H}-\text{C}\equiv\text{C}-\text{H}$
General formula for alkyne is $\mathrm{C}_n \mathrm{H}_{2 n-2}$.
There must be at least one triple bond between carbon atoms.
With two carbon atom, the possible structure would be $\text{H}-\text{C}\equiv\text{C}-\text{H}.$

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