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MODEL PAPER 1 — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMODEL PAPER 11 Mark
MCQ
Which oxide will turn blue litmus solution to red?
$SO _2$
MgO
$Na _2 O$
$NO _2$
  • A
    A and D
  • B
    B and C
  • C
    A and C
  • D
    All of these
✓

Answer

A and D
Explanation: An acidic oxide will turn blue litmus red. Non-metal oxides (Oxides of S and N) are acidic in nature. Metal oxides (Oxides of Mg and Na) are basic in nature.

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