Which option shows a wrong unit for India's area?
Answer and explanation
Correct answer: 3.28 × 10^6 km
The governing concept is the difference between units of length and units of area. A kilometre, written km, measures one-dimensional distance, whereas an area requires a square unit such as km². India’s area is approximately 3.28 × 10^6 km². Option A is therefore the wrong expression because it omits the square symbol. Option B is correct. Option C is equivalent because 3.28 million km² equals 32.8 lakh km². Option D is also a valid area expression: one square kilometre equals 100 hectares, so 3.28 × 10^6 km² is about 3.28 × 10^8 hectares. Checking the dimension of the unit prevents the mistake.
Frequently asked questions
What is the correct answer to this question?
3.28 × 10^6 km
Why is this the correct answer?
The governing concept is the difference between units of length and units of area. A kilometre, written km, measures one-dimensional distance, whereas an area requires a square unit such as km². India’s area is approximately 3.28 × 10^6 km². Option A is therefore the wrong expression because it omits the square symbol. Option B is correct. Option C is equivalent because 3.28 million km² equals 32.8 lakh km². Option D is also a valid area expression: one square kilometre equals 100 hectares, so 3.28 × 10^6 km² is about 3.28 × 10^8 hectares. Checking the dimension of the unit prevents the mistake.
Which subject and chapter does this question cover?
This is a Class 11 Geography question. Chapter: India - Location. Topic: India’s size and area.
