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The indicator which produces a pink colo...

The indicator which produces a pink colour in an alkaline solution is:

A

methyl orange

B

turmeric

C

litmus paper

D

phenolphthalein

Text Solution

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The correct Answer is:
D
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Name an indicator which is pink in alkaline solution but turns colourless in acidic solution.

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Knowledge Check

  • 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

    A
    A and B
    B
    B and C
    C
    C and D
    D
    A and D

  • Which indicator will produce a pink colour on adding a few drops of sodium hydroxide solution?

    A
    blue litmus
    B
    phenolphthalein
    C
    turmeric paper
    D
    china rose indicator

  • Arrange the following indicators in the order of their colours in the acidic solution. The colours are red, pink, colourless and yellow. The indicators are

    A
    CBAD
    B
    CBDA
    C
    BCAD
    D
    BCDA

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    Calcium burns in nitrogen to produce a white powder which dissolves insufficient water to produce a gas A and an alkaline solution. The solution on exposure to air produces a thin solid layer of b on the surface. Indentify the compounds A and B .

    Calcium bums in nitrogon to produce a white powder which dissolves in sufficient water to produce a gas (A) and an alkaline solution. The solution on exposure to air produces a thin solid layer of (B) on the surface. Identify the compounds A and B.

    Calcium burns in nitrogen to produce a white powder which dissolves in sufficient water to produce a gas (A) and an alkaline solution . The solution on exposure to air produces a thin solid layer of (B) on the surface . Identify the compounds A and B .

    Fill in the cross word given as Figure 5.2 with the help of the clues provided . ACROSS (2) The solution which does not change the colour of either red or blue litmus . (4) Phenolphthalein gives pink colour in this type of solution . (7) Colour of blue litmus in lemon juice . DOWN (1) It is used to test whether a substance is acidic or basic . (3) It is a natural indicator and gives pink colour in basic solution . (5) Nature of ant's sting . (6) It is responsible for increase in temperature during a neutralisation reaction.

    Arrange the following indicators in the order of their colours in the acidic solution. The colours are red, pink, colourless and yellow. The indicators are (A) Turmeric (B) Litmus (C) Methyl orange (D) Phenolphthalein

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