Which of the following substances has a pH value closest to 7 at room temperature?
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Question

Which of the following substances has a pH value closest to 7 at room temperature?

Accepted Answer

Correct Option: B Pure water is a neutral substance and has a pH value of exactly 7 at 25°C. The pH scale ranges from 0 to 14, where values less than 7 indicate acidic nature, values greater than 7 indicate basic (alkaline) nature, and exactly 7 represents neutrality. Lemon juice is acidic (pH 2), soap solution is basic (pH 10), and stomach acid is highly acidic (pH 1.5). Therefore, pure water is the only neutral substance among the options.

Acids, Bases and Salts

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