New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Which of the following solutions will not change the

    colour of blue litmus paper to red?  1. Acid solution 2. Base solution 3. Common salt solution Select the correct answer using the codes given below 
    A 1 and 3 Correct Answer Incorrect Answer
    B 2 and 3 Correct Answer Incorrect Answer
    C Only 1 Correct Answer Incorrect Answer
    D Only 2 Correct Answer Incorrect Answer

    Solution

    The blue litmus paper turns red in acidic solution and blue in basic solution. The neutral solution does not affect the litmus paper. Now since common salt solution is neutral hence do not show any colour change on litmus paper. 

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