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Which of the following is alkaline?

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$KCl$ solution

${CH}_{3} {COONH}_{4}$ solution

${FeCl}_{3}$ solution

$KCN$ solution

answer is D.

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Detailed Solution

The following is alkaline $KCN$ solution.

Bases that may dissolve in water are called alkalis. Alkalis include substances like potassium hydroxide, sodium hydroxide, etc. A soluble base has a pH value higher than 7.0.

Hence the option D is correct.

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