Beet root Solution, Indicator prepared from Red Cabbage Leaves


 
 
Concept Explanation
 

Beet Root Solution, Indicator prepared from Red Cabbage Leaves

Red-Cabbage Juice:

It is  purple in colour, it turns red in an acid solution, but green in a basic solution.Red cabbage contains a water soluble pigment called as anthocyanin that changes colour when mixed with an acid or a base.. Below is the table showing change in colour of red cabbage juice when mixed with different substances with the pH value

pH 1-2 3-4 5-6 7-8 9-10 11-12
Colour Pink Dark Red Violet Blue Blue-Green Greenish-Yellow

Beetroot :

It is a taproot portion of a beet plant.The juice of beetroot is used as acid-base indicator.It is red in acidic solution and blue in basic solutions.

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Sample Questions
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Question : 1

Which of the following are correct :

(a) Beetroot contain a pigment known as Lycopene.

(b) The juice of beetroot is used as acid-base indicator which is blue in basic solutions.

(c) Beetroot change from red to yellow some where between pH 11 and 12.

Right Option : B
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Question : 2

Beetroot contain a pigment known as ______________________ that will change from red to yellow some where between pH 11 and 12.

Right Option : C
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Explanation
Question : 3

Which of the following are correct :

(a) The juice of beetroot is used as acid-base indicator which is red in acidic solution.

(b) Beetroot contain a pigment known as anthocyanin.

(c) Red cabbage contains a water soluble pigment called as anthocyanin.

Right Option : D
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Explanation
 
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