With reference to the hydrological cycle, consider the following statements: 1. It involves the continuous exchange of water between the atmosphere, land surface, subsurface, and organisms. 2. About 30 % of the planetary water is found in the oceans. 3. The renewable water on the earth remains constant over time while the demand is decreasing. Which of the statements given above is/are correct?

The correct option is 1 only Explanation The hydrological cycle, or water cycle, describes the continuous movement of water on, above, and below the surface of the Earth. It operates as a closed system where the total amount of water remains constant, though its state and location change continuously. Statement-wise Analysis: - Statement 1 is Correct: The hydrological cycle involves the circulation of water through processes such as evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. It facilitates the continuous exchange of water between the atmosphere, land surface, subsurface (groundwater), and living organisms (via transpiration and intake). - Statement 2 is Incorrect: The oceans contain the vast majority of Earth's water. Approximately 97.3% (or roughly 97%) of planetary water is found in the oceans. Only about 2.5% to 3% is fresh water, which includes glaciers, ice caps, groundwater, and surface water. The figure of 30% is factually wrong. - Statement 3 is Incorrect: While the total amount of renewable water on Earth remains roughly constant due to the closed nature of the hydrological cycle, the demand for water is increasing rapidly. This rise in demand is driven by population growth, industrialization, urbanization, and agricultural expansion, leading to water stress in many regions. Key Takeaway: The hydrological cycle ensures the circulation of water across the hydrosphere, atmosphere, and lithosphere. While oceans hold nearly 97% of Earth's water, the global demand for the limited freshwater resources is increasing, not decreasing.

With reference to the hydrological… - NCERT Class 11 Geography MCQ

NCERT Class 11 Geography — Chapter 1: Water (Oceans)

mcqmedium

With reference to the hydrological cycle, consider the following statements:

It involves the continuous exchange of water between the atmosphere, land surface, subsurface, and organisms.
About 30 % of the planetary water is found in the oceans.
The renewable water on the earth remains constant over time while the demand is decreasing.

Which of the statements given above is/are correct?

NCERT textbook question

From NCERT Fundamentals of Physical Geography · Page 2

Options

A1, 2 and 3
B1 and 3 only
C1 only
D2 only

Did you get this right?

Solution

The correct option is

1 only

Explanation

The hydrological cycle, or water cycle, describes the continuous movement of water on, above, and below the surface of the Earth. It operates as a closed system where the total amount of water remains constant, though its state and location change continuously.

Statement-wise Analysis:

Statement 1 is Correct: The hydrological cycle involves the circulation of water through processes such as evaporation, condensation, precipitation, infiltration, runoff, and subsurface flow. It facilitates the continuous exchange of water between the atmosphere, land surface, subsurface (groundwater), and living organisms (via transpiration and intake).
Statement 2 is Incorrect: The oceans contain the vast majority of Earth's water. Approximately 97.3% (or roughly 97%) of planetary water is found in the oceans. Only about 2.5% to 3% is fresh water, which includes glaciers, ice caps, groundwater, and surface water. The figure of 30% is factually wrong.
Statement 3 is Incorrect: While the total amount of renewable water on Earth remains roughly constant due to the closed nature of the hydrological cycle, the demand for water is increasing rapidly. This rise in demand is driven by population growth, industrialization, urbanization, and agricultural expansion, leading to water stress in many regions.

Key Takeaway:
The hydrological cycle ensures the circulation of water across the hydrosphere, atmosphere, and lithosphere. While oceans hold nearly 97% of Earth's water, the global demand for the limited freshwater resources is increasing, not decreasing.

Your note

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