SC-1113
pH scale
Lower Sec Science · Secondary 2 · Easy · pH scale
A student adds a few drops of universal indicator to four solutions: P, Q, R and S. The colours observed are:
• P: red
• Q: orange
• R: green
• S: purple
Which solution is a strong alkali?
• P: red
• Q: orange
• R: green
• S: purple
Which solution is a strong alkali?
- P
- Q
- R
- S
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