Air

10 solved questions from Class 7 Geography, each with the full working. Tap any question to see the step-by-step solution.

• 1 Why is the theme of 'Air' important in Social Science? medium MCQ Social Significance
• 2 Which key factor is highlighted in the study of 'Air'? medium MCQ Key Factors & Analysis
• 3 What lesson can be drawn from the study of 'Air' in modern context? hard MCQ Modern Relevance
• 4 Which source or evidence is commonly used to study 'Air'? medium MCQ Sources of Information
• 5 What is the primary topic or theoretical principle explored in 'Air' (Class 7 GEOGRAPHY)? medium MCQ Chapter Core Principle
• 6 Which key mechanism or analytical rule is highlighted in 'Air'? medium MCQ Key Analytical Mechanism
• 7 What is the percentage of nitrogen in dry air by mass? easy MCQ 1 mark Composition of air
• 8 A sealed cylindrical container of height 1.5 m and radius 0.3 m is filled with dry air at 1 atm and 0°C. How many moles of air are in the container? (Assume molar volume at STP = 22.4 L/mol). medium 2 marks Moles of air in a given volume
• 9 At what altitude does the atmospheric pressure drop to about 70 % of its sea‑level value? Assume the pressure falls by 100 hPa per 1 km rise and sea‑level pressure is 1013 hPa. medium 2 marks Pressure variation with altitude
• 10 If the atmospheric pressure at a hill station is 850 hPa, what percentage of sea‑level pressure (1013 hPa) is this? easy MCQ 1 mark Pressure variation with altitude