Q.

Some flowers, like Hydrangea, Petunia, and.................., have coloured petals that show if an acid or base is present in a solution. These are referred to as acid-base indicators or occasionally just indicators.

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a

Rose

b

Water lily

c

Hycanith

d

Geranium

answer is C.

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Detailed Solution

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  • Several flowers, like hydrangeas, petunias, and geraniums, have coloured petals that show if an acid or base is present in a solution. 
  • These are referred to as acid-base indicators or occasionally just indicators.
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