A student adds a few drops of the universal indicator solution to a dilute solution of sodium hydrogencarbonate taken in a test-tube. Which of the following colour would he observe?
(1) blue
(2) green
(3) mustard
(4) yellow
Answers
Answered by
1
Answer:
l think blue is the right answer
Answered by
1
The correct answer is blue.
Explanation:
- A universal indicator is a mixture of several indicators having numerous ranges of pH values to indicate whether the given sample is alkaline or acidic in nature.
- The color of the solution changes to purple or blue, then that solution is alkaline in nature. But if it changes to red, then the solution is acidic in nature.
- When the student added a few drops on the solution of universal indicator to the solution of dilute sodium hydrogen carbonate then the solution changes to blue colour indicating the alkaline nature of the solution.
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