|Type of Litmus||X||Y||Z|
|Red litmus||turns blue||no change||no change|
|Blue litmus||no litmus||turns red||no change|
A) By the reaction of X and Y
B) By dissolving X in water
C) By dissolving Y in water
D) Cannot be said
Correct Answer: A
Solution :Z is either water or salt, both of which can be obtained from the reaction between acid and a base. Since X is a base and Y is an acid, Z can be obtained from the reaction between X and Y.
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