7th Class Science Acids, Bases and Salts / अम्ल, क्षार एवं लवण 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: \[\text{Magnesium+Oxygen}\xrightarrow{\text{heat}}\text{''A''}\xrightarrow{\text{Water}}\text{''B''}\xrightarrow[\text{solution}]{\text{Red litmus}}\text{''C''}\] "C" in it indicates that

    A) Red litmus when added to "B", no change in colour occurs.

    B) Red litmus when added to "B" changes to blue.

    C) Red litmus when added to "B" changes to green.

    D) Red litmus when added to "B" it gives a colorless solution

    Correct Answer: B

    Solution :

    "B" is magnesium hydroxide (basic in nature) when red litmus is added to it, it turns blue.


You need to login to perform this action.
You will be redirected in 3 sec spinner