Choose the term that matches this description: a scale from 0 to 14 used to measure how acidic or basic a substance is, with 7 being neutral.
Difficulty: Hard
About this MCQ
This Hard General Science and Nature question asks: Choose the term that matches this description: a scale from 0 to 14 used to measure how acidic or basic a substance is, with 7 being neutral. The correct choice is D. pH Scale. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
General Science and Nature items like this one are written for Pakistan exams such as CSS, FPSC, PPSC, and NTS. The difficulty label is a hint about how much of the topic the stem assumes, not a score. Tags and exam names, when they are present, tell you where else the same idea is tested. Previous and next links stay in General Science and Nature so you can continue the subject. Related questions point at nearby stems if you want another angle on the same idea.
Treat the explanation as part of the question, not a footnote. If you missed it, reread the stem against the correct option before you open the next General Science and Nature item. A timed quiz is the same pool with a clock and a score. A past paper is a full sitting rather than this single question.
- A. Venus
Why not A: “Venus” does not fit this question. The answer is pH Scale.
- B. Reptiles
Why not B: “Reptiles” does not fit this question. The answer is pH Scale.
- C. Ozone Layer
Why not C: “Ozone Layer” does not fit this question. The answer is pH Scale.
- D. pH Scale ✓
Correct answer
D. pH Scale
Explanation
pH Scale (option D) is the accepted answer to “Choose the term that matches this description: a scale from 0 to 14 used to measure how acidic or basic a substance is, with 7 being neutral.”. Option A (Venus) does not fit this question. Option B (Reptiles) does not fit this question. Option C (Ozone Layer) does not fit this question. For this General Science and Nature question, the accepted answer is pH Scale.
Source: General Knowledge Official Reference Guide
Tags: FPSC, PPSC, General Knowledge, NTS, General Science and Nature
Submitted by: MCQsHub Editorial
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