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MODEL PAPER - 1 [2026] — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER - 1 [2026]1 Mark
MCQ
A hydrocarbon with molecular formula $\mathrm{C}_{4} \mathrm{H}_{10}$ has:
  • A
    10 covalent bonds
  • B
    7 covalent bonds
  • C
    6 covalent bonds
  • ✓
    13 covalent bonds
✓

Answer

Correct option: D.
13 covalent bonds
(D) 13 covalent bonds
Explanation:Butane $\mathrm{C}_{4} \mathrm{H}_{10}$ has $3 \mathrm{C}-\mathrm{C}$ covalent bonds and $10 \mathrm{C}-\mathrm{H}$ covalent bonds. Thus, it has 13 covalent bonds.

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