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MODEL PAPER - 4 [2026] — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER - 4 [2026]1 Mark
MCQ
Which of the given statement is correct or wrong:
Statement A: Detergent with less branching in the molecule is degraded more easily than branched-chain detergents.
Statement B: Soaps are 100% biodegradable.
  • ✓
    Both the statements $A$ and $B$ are true
  • B
    Neither statement $A$ nor statement $B$ is true.
  • C
    Statement B is true; Statement A is false.
  • D
    Statement A is true; Statement B is false.
✓

Answer

Correct option: A.
Both the statements $A$ and $B$ are true
(A) Both the statements $A$ and $B$ are true.
Explanation:
All soaps are biodegradable i.e. they can be decomposed by micro-organisms like the bacteria. Branched-chain synthetic detergents are far less degradable than unbranched detergents.

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