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Standard VII
Chemistry
Natural Indicators
Question

China rose indicator turns basic solution to:
  1. orange
  2. magenta
  3. yellow
  4. green

A
magenta
B
orange
C
yellow
D
green
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Solution
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China rose is a natural indicator.
It helps us to identify whether a given solution is acidic, basic, or neutral by itself undergoing a color change.
It turns to dark pink with acid and changes its color to green in the basic medium.
Hence, the correct answer is option (D).

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Q1
China rose indicator turns basic solution to:
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Q2
China rose indicator is turned green by a certain solution. The solution is:
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Q3
China rose turns acidic solution to ________ and basic solution to ________.
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Q4

Q58) Consider the following statements about acid-base indicators.

i) Phenolphthalein gives a pink colour if the solution is acidic.

ii) China rose indicator turns acidic solutions to dark pink.

iii) Blue litmus turns red for a basic solution.

Which of the above statements are true?


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Q5
In the presence of a soap solution, the china rose indicator will turn in colour.
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