2. Sample Papers
  3. 10th Class
  4. Science

10th Class Science Sample Paper Science Olympiad Model Test Paper-1

  • question_answer
    Name the acid-base indicator extracted from lichen.

    A) Methyl orange

    B) Phenolphthalein

    C) Litmus  

    D) All of these        

    E) None of these    

    Correct Answer: C

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