Select the accurate description of Oxygen.
Difficulty: Easy
About this MCQ
This Easy Science and Inventions question asks: Select the accurate description of Oxygen. The correct choice is A. The chemical element with the symbol O that is essential for human respiration. Read the options below, commit to one, then use the explanation to see why that choice holds and why the others do not.
Science and Inventions 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 Science and Inventions 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 Science and Inventions 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. The chemical element with the symbol O that is essential for human respiration ✓
- B. The gas absorbed by plants during photosynthesis and released by humans during respiration
Why not B: “The gas absorbed by plants during photosynthesis and released by humans during respiration” does not fit this question. The answer is The chemical element with the symbol O that is essential for human respiration.
- C. The process by which green plants use sunlight to convert carbon dioxide and water into food
Why not C: “The process by which green plants use sunlight to convert carbon dioxide and water into food” does not fit this question. The answer is The chemical element with the symbol O that is essential for human respiration.
- D. The chemical compound made of two hydrogen atoms and one oxygen atom
Why not D: “The chemical compound made of two hydrogen atoms and one oxygen atom” does not fit this question. The answer is The chemical element with the symbol O that is essential for human respiration.
Correct answer
A. The chemical element with the symbol O that is essential for human respiration
Explanation
The chemical element with the symbol O that is essential for human respiration option A is the accepted answer to Select the accurate description of Oxygen Option B The gas absorbed by plants during photosynthesis and released by humans during respiration does not fit this question Option C The process by which green plants use sunlight to convert carbon dioxide and water into food does not fit this question Option D The chemical compound made of two hydrogen atoms and one oxygen atom does not fit this question For this Science and Inventions question the accepted answer is The chemical element with the symbol O that is essential for human.
Source: General Knowledge Official Reference Guide
Tags: FPSC, PPSC, General Knowledge, NTS, Science and Inventions
Submitted by: MCQsHub Editorial
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