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A bud of petunia became reddish …

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A bud of petunia became reddish purple after first shower of rain.what does it indicate

Posted by Sai Kalyan 6 years, 11 months ago

CBSE > Class 10 > Other Subjects

3 answers

Alok Ghunawat 4 years, 6 months ago

Petunia is a natural indicator which turns reddish purple if exposed to acid. Now first shower of rains generally contains some acid which is formed by reacting of sulphur dioxide and carbon dioxide with water present in atmosphere. Due to the presence of sulphuric acid and carbonic acid, after the first shower of rain the petunia flowers turn reddish purple as they are exposed to the slightly acidic water. Hope it helps

Kunal Mishra 6 years, 11 months ago

As first rain is acidic

Siddhant Singh 6 years, 11 months ago

Petunia is a natural indicator which turns reddish purple if exposed to acid. Now first shower of rains generally contains some acid which is formed by reacting of sulphur dioxide and carbon dioxide with water present in atmosphere. Due to the presence of sulphuric acid and carbonic acid, after the first shower of rain the petunia flowers turn reddish purple as they are exposed to the slightly acidic water. Hope it helps!?

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