8th Class Science Materials : Metals and Non-metals Question Bank Materials

  • question_answer
    Viscose is formed by dissolving:

    A) Wood pulp into a solution of hydrochloric acid.

    B) Wood pulp into sodium hydroxide solution.

    C) Wood pulp into sulphuric acid solution.

    D) Polyester into sodium hydroxide solution.

    E) None of these

    Correct Answer: B


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