What colour does litmus solution turn in an alkali?
Answer and explanation
Correct answer: D. Blue
- Step 1: Litmus is red in acid and blue in alkali.
- Step 2: An alkali has a pH above 7, so litmus turns blue.
Answer
Blue.
Why not the others: Red: this is the colour in acid. Green: universal indicator is green in neutral solutions. Yellow: this is a different indicator colour.
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