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A student mixed some soil with water in ...

A student mixed some soil with water in a beaker and allowed it to settle. He filtered the contents of the beaker and obtained a clear filtrate. When he put a few drops of the filtrate on the pH paper, the pH paper turned yellowish orange. Which of the following should the student put on this pH paper so that it may change its colour to greenish blue?

A

`NaHCO_(3)` solution

B

`HCl` solution

C

vinegar solution

D

Common salt solution

Text Solution

Verified by Experts

The correct Answer is:
C
NA
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