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 - 4 Indicators change their colour when added to a solution containing an acidic or a basic substance. Turmeric, litmus, China rose petals (Gudhal), etc., are some naturally occurring indicators. Which of the following is correct about the indicator China rose?

    A) It is a natural indicator.

    B) It gives green colour in an acidic solution.

    C) It gives magenta colour in a basic solution.

    D) All the above are correct.

    Correct Answer: A

    Solution :

    China rose gives magenta colour in acidic solution and green colour in basic solution.

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