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प्रश्न
A solution has a pH of 7. Explain, how you would:
Decrease its pH, If a solution changes the color of litmus from red to blue, what can you say about its pH?
एक पंक्ति में उत्तर
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उत्तर
pH can be decreased by adding an acid such as HCl to it.
If a solution changes colour of litmus from red to blue, it shows that its pH is above 7.
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