GATE ES · 2026 · ES
Question 63: Air pollution
Give it a try, then reveal the answer to check your work.
Question 63
ESNAT2 marksNeeds review
The concentration of chemical A in ambient air is 50 μg/m
and the toxicological index limit for a threshold health effect for this chemical is 5 mg.If the average breathing rate is 4 L/min, the minimum time of exposure that can lead to any health effect is _____ days (rounded off to one decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerEXPLORE & PRACTISE
Paper and topic context
See where this question comes from and choose what to practise next.
2026ES
GATE ES 2026 · Paper 1
Environmental Science and Engineering · Original paper archive
- Section
- Environmental Science and Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
Practise related topics
Explore more previous year questions using this question’s imported topic tags.
environmental science
GATE ES previous year questions
environmental engineering
GATE ES previous year questions
sustainability
GATE ES previous year questions
air pollution
GATE ES previous year questions
Comments
Ask a question, share your approach, or help someone understand.
Log in to view the discussion
You’re not logged in. Log in or create an account to see discussions and add comments.