What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.
Difficulty: Medium
About this MCQ
This Medium Science and Inventions MCQ checks one syllabus fact.
The question is: “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.”
The accepted answer is C. Oxygen. Oxygen is the fact required by “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.” (option C). Option A (“The Wright Brothers”) does not match the stem; it is a near-miss used to catch incomplete recall of Oxygen. Option B (“Thomas Edison”) does not match the stem; it is a near-miss used to catch incomplete recall of Oxygen. Remaining alternatives (DNA) fall outside the same rule and should be eliminated once Oxygen is identified. Science and Inventions questions of this type reward precise definitions rather than approximate associations. Science and Inventions recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
- A. The Wright Brothers
Why not A: “The Wright Brothers” is not correct. The accepted answer is C. Oxygen. Oxygen is the fact required by “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.” (option C). Option A
- B. Thomas Edison
Why not B: “Thomas Edison” is not correct. The accepted answer is C. Oxygen. Oxygen is the fact required by “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.” (option C). Option A
- C. Oxygen ✓
- D. DNA
Why not D: “DNA” is not correct. The accepted answer is C. Oxygen. Oxygen is the fact required by “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.” (option C). Option A
Correct answer
C. Oxygen
Explanation
Oxygen is the fact required by “What term is best described by the following? the chemical element with the symbol O that is essential for human respiration.” (option C). Option A (“The Wright Brothers”) does not match the stem; it is a near-miss used to catch incomplete recall of Oxygen. Option B (“Thomas Edison”) does not match the stem; it is a near-miss used to catch incomplete recall of Oxygen. Remaining alternatives (DNA) fall outside the same rule and should be eliminated once Oxygen is identified. Science and Inventions questions of this type reward precise definitions rather than approximate associations. Science and Inventions recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
Source: General Knowledge Official Reference Guide
Tags: FPSC, PPSC, General Knowledge, NTS, Science and Inventions
Submitted by: MCQsHub Editorial
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