allerySolutions that change neither red nor blue litmus are:
ABasic
BSalty
CNeutral
DAcidic
Answer & Solution
Correct answer: C. Neutral
1. Some solutions leave both litmus papers unchanged.
2. They are neither acidic nor basic in nature.
3. Such solutions are known as neutral solutions.
4. So the answer is neutral.
_Source: syllabus Science, Ch 4 'Acids, Bases and Salts'_
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