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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
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
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Two drinks P and Q gave acidic and alkaline reactions, respectively. One has a pH value of 9 and the other has a pH value of 3. Which drink has the pH value of 9?
What is a universal indicator?
What effect does the concentration of OH− ions have on the nature of a solution?
Someone put some universal indicator paper onto wet soap. The pH is 8. What does this tell you about the soap?
Which of the following elements would form oxides which would indicate pH values less than seven, using moist pH paper?
Magnesium, Carbon, Sulphur, Hydrogen, Copper
Here are some results of solutions tested with universal indicator paper:
| Sulphuric acid | : | Red |
| Metal polish | : | Dark blue |
| Washing-up liquid | : | Yellow |
| Milk of magnesia | : | Light blue |
| Oven cleaner | : | Purple |
| Car battery acid | : | Pink |
Arrange the solutions in order of their increasing pH values (starting with the one with the lowest pH).
A student prepares solutions of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless, how will she distinguish between the two?
