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MODEL PAPER 10 — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER 101 Mark
MCQ
Assertion (A): Silver articles become black after sometime when exposed to sunlight
Reason (R): It is because silver reacts with carbonates present in the air.
  • A
    Both A and R are true and R is the correct explanation of A.
  • B
    Both A and R are true but R is not the correct explanation of A.
  • C
    A is true but R is false.
  • D
    A is false but R is true.
✓

Answer

(c) A is true but R is false.
Explanation: Silver reacts with sulphur present in the air and forms a layer of silver sulphide, therefore, silver articles get
tarnished. Thus assertion is true, but reason is false.

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