General Science - Physics (Basics)
Which of the following non-metals is essential for respiration in humans?
Which of the following non-metals is essential for respiration in humans?
easy Q13 of 15
Step-by-Step Solution
Step 1: Identify the non-metal involved in respiration
Oxygen is the non-metal gas essential for cellular respiration in humans.Step 2: Analyze other gases
Nitrogen is inert and does not support respiration; carbon dioxide is a waste product; hydrogen is not involved in respiration.Final Answer:
Oxygen → Option AQuick Check:
Non-metal for respiration = Oxygen ✅
Quick Trick: Oxygen supports breathing and combustion.
Common Mistakes:
- Confusing nitrogen as the gas used in respiration.
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