Previous
Question 135 of 525
Next
Easy 0 views · Science

Which gas is essential for respiration in humans?

A
Carbon dioxide
B
Oxygen
C
Nitrogen
D
Helium
or press Space / Enter
Previous
In March 2026, which country's scientist…
Next
Which is the largest planet in our solar…
🇮🇳 हिंदी Hindi Version
मनुष्यों में श्वसन के लिए कौन सी गैस आवश्यक है?
A
कार्बन डाइऑक्साइड
B
ऑक्सीजन
C
नाइट्रोजन
D
हीलियम
Science 135/525
Previous Next
View All Questions
Share Result
Share
Quiz Mode
Test your knowledge with a quiz!
Play Quiz