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Environmental Monitoring Technologies: Air Quality Assessment

Question 1 of 14

Which of the following is a common method for measuring particulate matter (PM) in the air?

  1. Gas chromatography
  2. Nephelometry
  3. Spectrophotometry
  4. Gravimetric analysis

Prize Money

15₹7 Crores
14₹1 Crore
13₹50,00,000
12₹25,00,000
11₹12,50,000
10₹6,40,000
9₹3,20,000
8₹1,60,000
7₹80,000
6₹40,000
5₹20,000
4₹10,000
3₹5,000
2₹2,000
1₹1,000