Q103 · UPPSC Prelims 2025 · Set A · General Studies

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With reference to 'acid and bases', which of the following statements is/are correct?1.Acidic solutions have pH more than 7.2.Basic solutions have pH less than 7.Select the correct answer from the code given below:

A Only 2
B Neither 1 nor 2
C Both 1 and 2
D Only 1

Correct answer: (b) Neither 1 nor 2

Explanation

  1. A

    Only 2

    Only 2. Both statements reverse pH: acids < 7, bases > 7.

  2. B

    Neither 1 nor 2

    Neither 1 nor 2. Acid pH is less than 7; basic pH is more than 7.

  3. C

    Both 1 and 2

    Both. Both limbs are inverted.

  4. D

    Only 1

    Only 1. Acidic solutions have pH less than 7, not more.

Summary. Official key is (b) neither. Both pH statements are reversed. Also note: pH 7 — Neutral at 25 °C; Acid < 7 — More H+; Base > 7 — More OH−; pH scale — 0–14 usual aqueous.