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Name an indicator which is red in acid s...

Name an indicator which is red in acid solution but turns blue in basic solution.

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Litmus
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Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.

Name one indicator which turns red on adding a base.

Knowledge Check

  • The indicators which turn red in acid solution are:

    A
    turmeric and red litmus
    B
    phenolphthalein and methyl orange
    C
    blue litmus and methyl orange
    D
    phenolphthalein and red litmus

  • Which fo the following statements is corect ? (i) Phenolphthalenin is colorless in the acid solution but turns pink in the basic solution. (ii) Methly orange is yellow in acid solution but turns red in the basic solution. (iii) Pheneolphthalein is pink in the acid solution but turns colorless in the basic solution . (iv) Methyl orange is red in acid solution but turns yellow in the basic solution.

    A
    (i),(ii)
    B
    (ii), (iii)
    C
    (i), (iv)
    D
    (iii), (iv)

  • The solution in a beaker turns blue if

    A
    Cu electrode is placed in `ZnSO_(4)` solution
    B
    Cu electrode is placed in `AgNO_(3)` solution
    C
    Cu electrode is placed in `Al_(2)(SO_(4))_(3)` solution
    D
    Cu electrode is placed in `FeSO_(4)` solution

    • Similar Questions

    Explore conceptually related problems

    Name one indicator which turns red on adding a base.

    Name one indicator which turns red on adding an acid.

    A certain acid-base indicator is red in acid solution and blue in basic medium. At pH=5 75% of the indictor is present in the solution in its blue form. Calculate the pH at which indicator shows 90% red form ?

    A certain acid - base indicator is red in acid and blue in basic solution. At pH = 5, 75% of the indicator is present in the solution in its blue form. Calculate dissociation constant (K_a) for the indicator and pH range over which the indicator changes from 90% red- 10% blue to 90% blue-10% red.

    The two indicators which give red or pink colour on adding a basic solution are : A. China rose indicator B. Turmeric paper indicator C. Phenolphthalein indicator D. Blue litmus indicator

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