UPSC CDS 1 2023 GK Paper

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Question : 111 of 120

Marks: +1, -0

Which one of the following is the correct order of pH for the given substances?

Coffee < Lemon juice < Milk of magnesia < Blood
Milk of magnesia < Blood < Coffee < Lemon juice
Lemon juice < Blood < Coffee < Milk of magnesia
Lemon juice < Coffee < Blood < Milk of magnesia

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