Oceanography : Oceans

Q 8 / 11

UPSC CSE Prelims 2005

Consider the following statements:
  1. Total land area of Earth is approximately 1475 lakh square kilometers.
  2. Ratio of land area to water area of Earth is approximately 1 : 4.
  3. Maximum percentage of Earth’s water is in the Pacific Ocean.

Which of the statements given above is/are correct?

EXPLANATION

Correct Option (a):

Statement 1 is correct. The total land area of Earth is approximately 148.3 million square kilometers, which is equivalent to 1483 lakh square kilometers. Therefore, 1475 lakh square kilometers is a reasonable approximation.

Statement 3 is correct. The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It contains the maximum volume of Earth's ocean water, covering over 165 million square kilometers.

Incorrect Options:

Statement 2 is incorrect. The approximate ratio of land area to water area on Earth is about 1:2.43, meaning approximately 29% of the Earth's surface is land and 71% is water. A ratio of 1:4 would imply a significantly lower percentage of land (20%), which is factually inaccurate.

Options (b), (c), and (d) are incorrect. Option (b) is incorrect because Statement 2 is false. Options (c) and (d) are incomplete as they do not include both Statement 1 and Statement 3, both of which are correct.

SOURCENCERT Class 11 Geography Chapter 13: Water (Oceans)