7th Class Science Acids, Bases and Salts Question Bank Acids, Bases and Salts

  • question_answer DIRECTIONS: Read the passage given below and answer the questions that follow. Passage ? 1 Observe the flow chart given below and answer the questions that follow: \[\text{Magnesium+Oxygen}\xrightarrow{\text{heat}}\text{''A''}\xrightarrow{\text{Water}}\text{''B''}\xrightarrow[\text{solution}]{\text{Red litmus}}\text{''C''}\] "A" in this represents

    A) magnesium oxide

    B) magnesium hydroxide

    C) both magnesium oxide and magnesium hydroxide

    D) none of these

    Correct Answer: A

    Solution :

    "A" is magnesium oxide, MgO

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