Keerthi wrote a secret message to her grandmother on her birthday using orange juice Class 7
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Keerthi wrote a secret message to her grandmother on her birthday using orange juice Class 7
Keerthi wrote a secret message to her grandmother on her birthday using orange juice. Can you assist her grandmother in revealing the message? Which indicator would you use to make it visible? Class 7
Answer:
Keerthi's grandmother can use rose extract or beetroot juice (which will turn red) or Indian blackberry extract (which will turn purple) to make the message visible.