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A student needs to test whether a laboratory sample contains a strong base. Which procedure is most appropriate for confirming this?
Dip blue litmus paper and check if it remains blue
Add a drop of phenolphthalein and observe a pink colour
Add methyl orange and look for a red colour
Smell the solution for a sharp odour
Add a drop of phenolphthalein and observe a pink colour
Practice and solve "A student needs to test whether a laboratory sample contains a strong base. Which procedure is most ..." for General Science - Previous Year Paper 2026. The correct answer is Option B: Add a drop of phenolphthalein and observe a pink colour. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "A student needs to test whether a laboratory sample contains a strong base. Which procedure is most ..." for General Science - Previous Year Paper 2026. The correct answer is Option B: Add a drop of phenolphthalein and observe a pink colour. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.