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प्रश्न
In acidic solution, the colour of the hibiscus indicator paper will change to _____.
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उत्तर
In acidic solution, the colour of the hibiscus indicator paper will change to deep pink or deep red.
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संबंधित प्रश्न
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Lemon juice, Vinegar, Banking soda solution
Give reason for your choice.
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(i) Lemon juice
(ii) Solution of washing soda
(iii) Toothpaste
(iv) Vinegar
(v) Stomach juices
What damage could be caused while the pH is low?
A group of students measured the pH of some substances they found in their homes. Their results are given in the following table:
| Substance | pH | Substance | pH |
| Apples | 3.0 | Salt | 7.0 |
| Baking soda | 8.5 | Sugar | 7.0 |
| Black coffee | 5.0 | Toothpaste | 9.0 |
| Household ammonia | 12.0 | Vinegar | 3.0 |
| Lemon juice | 2.5 | Washing soda | 11.5 |
| Milk | 6.5 |
(a) What would the students have used to measure the pH?
(b) Which solution is the most acidic?
(c) Which solution is the most alkaline?
(d) Which solutions are neutral?
(e) Which solution can be used to treat wasp stings?
(f) Which solutions can be used to treat bee stings?
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Methyl orange gives ______ colour in an acidic solution.
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