CLASS 7 CHAPTER 4 Air MCQs

CLASS 7 CHAPTER 4 Air MCQs 1. What is the blanket of air surrounding the Earth called? (A) Lithosphere (B) Atmosphere (C) Hydrosphere (D) Biosphere Answer Answer: (B) Atmosphere 2. Which gas makes up the largest portion of the Earth’s atmosphere? (A) Oxygen (B) Carbon dioxide (C) Nitrogen (D) Hydrogen Answer Answer: (C) Nitrogen 3. … Read more