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प्रश्न
Turmeric is used as a _______.
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उत्तर
Turmeric is used as a indicator.
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संबंधित प्रश्न
Under what soil condition do you think a farmer would treat the soil of his fields with quick lime (calcium oxide) or slaked lime (calcium hydroxide) or chalk (calcium carbonate)?
A milkman adds a very small amount of baking soda to fresh milk. Why does he shift the pH of the fresh milk from 6 to slightly alkaline?
Is the distilled water acidic/basic/neutral? How would you verify it?
Name the indicator which can give us an idea of how strong or weak an acid or base is.
Two solutions X and Y have pH = 4 and pH = 8, respectively. Which solution will give alkaline reaction and which one acidic?
Explain how pH change in the lake water can endanger the lives of aquatic animals (like fish).
The pH values of five solutions A, B, C, D and E are given below:
| A | 1 |
| B | 5 |
| C | 7 |
| D | 11 |
| E | 13 |
Which solution is
- weakly alkaline
- neutral
- strongly acidic
- strongly alkaline, and
- weakly acidic?
Give names of any two natural indicators.
How will you prepare a china rose indicator?
Using the knowledge of acids and bases, write a secret message with the help of baking soda and beet root. Explain how it works.
(Hint: Prepare baking soda solution in water. Use this solution to write the message on a sheet of white paper with a cotton bud. Rub a slice of fresh beetroot over the message.)
