Volumetric ratio of N2 to O2 in dry atmospheric air is ______________?
Correct answer: B. 3.76
- A. 0.21
- B. 3.76
- C. 4.76
- D. 0.79
Explanation
Dry air contains approximately 79% nitrogen and 21% oxygen by volume, giving an N₂/O₂ ratio of 79/21, or about 3.76. The value 0.21 is the oxygen fraction, not the ratio.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
_____________ prohibits the use of alcohols directly in petrol engines ?
Highly reactive coke have lower ___________________?
Natural draught produced by a chimney depends upon the _____________________?
Bituminous coal___________________?
Coalification means the ___________________?
The ratio of % total carbon obtained in the ultimate analysis of coke and % fixed carbon obtained in the proximate analysis is always ___________________?