HomeGeneral KnowledgeWhich of the following group of gases cause photochemical smog? 577. Which of the following group of gases cause photochemical smog?By Admin / September 19, 2025 A. Ozone, PAN and CO B. HC, NO and PAN C. O2, PAN, and NO2 D. O3, PAN and NO2 ✅ The correct answer is option D. O3, PAN and NO2 cause photochemical smog.
1. In which field is the Dhanwantri Award given? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin
2. Which of the following awards was conferred on Mrs. Kiran Bedi? Leave a Comment / Awards and Honours MCQs, General Knowledge / By Admin