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प्रश्न
Indicator is a substance which shows different colours in acidic and basic solutions.
विकल्प
True
False
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उत्तर
This statement is True.
Explanation:
An indicator is a substance that changes colour when added to acidic or basic solutions, allowing us to determine the pH level of the solution.
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संबंधित प्रश्न
What is the pH of a neutral solution?
Fill in the following blank with suitable words:
Alkalis have a pH.............. than 7.
What is a universal indicator? For what purpose is it used?
Someone put some universal indicator paper into vinegar. The pH is 3. What does this tell you about the vinegar?
A solution turns blue litmus red. Its pH is likely to be:
(a) 7
(b) 5
(c) 8
(d) 14
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 batter acid | : Pink |
Arrange the solutions in order of their increasing pH value (starting with the one with the lowest pH).
Acids and bases can be identified in the laboratory by ______.
Methyl orange gives ______ colour in an acidic solution.
Neutral substances do not bring about any change in colour of indicators.
Name the acid present in vinegar.
