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

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER - 1 [2026]1 Mark
MCQ
How are the two strands in a DNA molecule held together?
  • A
    Phosphate band
  • B
    Ionic bond
  • C
    Covalent bond
  • ✓
    Hydrogen bond
✓

Answer

Correct option: D.
Hydrogen bond
(D) Hydrogen bond
Explanation: Each DNA molecule consists of two twisted strands of bases that form a shape called a double helix. The two strands are held together by hydrogen bonds between pairs of bases.

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