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Universal indicator shows green colour ...

Universal indicator shows green colour when pH of the solution is nearly....... .

A

4

B

11

C

12

D

7

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the pH at which a universal indicator shows a green color, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding pH Scale**: The pH scale ranges from 0 to 14, where: - pH < 7 indicates acidity, - pH = 7 indicates neutrality, - pH > 7 indicates alkalinity. 2. **Identifying the Universal Indicator**: A universal indicator is a pH indicator that shows different colors at different pH levels. It is used to determine the acidity or alkalinity of a solution. 3. **Color Correspondence**: The universal indicator shows specific colors at certain pH levels: - Red for acidic solutions (pH < 7), - Green for neutral solutions (pH = 7), - Blue to purple for alkaline solutions (pH > 7). 4. **Conclusion**: Since the question asks when the universal indicator shows green, we can conclude that this occurs at a pH of approximately 7. 5. **Final Answer**: Therefore, the universal indicator shows green color when the pH of the solution is nearly **7**.
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Knowledge Check

  • The colour of methyl orange indicator in a solution in yellow. The pH of this solution is likely to be:

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    B
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    0
    D
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    D
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