Geography › Oceanography – UPSC Prelims PYQs

Consider the following statements :

1. The Red Sea receives very little precipitation in any form.
2. No water enters the Red Sea from rivers.

Which of the statements given above is/are correct ?

With reference to the United Nations Convention on the Law of Sea, consider the following statements :

1. A coastal state has the right to establish the breadth of its territorial sea up to a limit not exceeding 12 nautical miles, measured from baseline determined in accordance with the convention.
2. Ships of all states, whether coastal or land-locked, enjoy the right of innocent passage through the territorial sea.
3. The Exclusive Economic Zone shall not extend beyond 200 nautical miles from the baseline from which the breadth of the territorial sea is measured.

Which of the statements given above are correct ?

With reference to Ocean Mean Temperature (OMT), which of the following statements is/are correct ?

1. OMT is measured up to a depth of 26°C isotherm which is 129 meters in the south-western Indian Ocean during January – March.
2. OMT collected during January – March can be used in assessing whether the amount of rainfall in monsoon will be less or more than a certain long-term mean.

Select the correct answer using the code given below :

What explains the eastward flow of the equatorial counter-current?

Tides occur in the oceans and seas due to which among the following?

1. Gravitational force of the Sun
2. Gravitational force of the Moon
3. Centrifugal force of the Earth

Select the correct answer using the code given below.

Which one of the following pairs of islands is separated from each other by the 'Ten Degree Channel'?

On the planet Earth, most of the freshwater exists as ice caps and glaciers. Out of the remaining freshwater, the largest proportion

The most important fishing grounds of the world are found in the regions where

Consider the following factors :

1. Rotation of the Earth
2. Air pressure and wind
3. Density of ocean water
4. Revolution of the Earth

Which of the above factors influence the ocean currents?

Consider the following statements:

1. On the planet Earth, the fresh water available for use amounts to about less than 1% of the total water found.
2. Of the total fresh water found on the planet Earth 95% is bound up in polar ice caps and glaciers.

Which of the statements given above is/are correct?

In which one of the following oceans is Diamantina Trench situated?

Bermuda triangle extends up to which of the following places?

1. Southern Florida
2. Puerto Rico
3. Hawaii Islands

Select the correct answer using the code given below:

Which one of the following statements is not correct?

Consider the following statements:

1. Ocean currents are the slow surface movement of water in the ocean.
2. Ocean currents assist in maintaining the Earth’s heat balance.
3. Ocean currents are set in motion primarily by prevailing winds.
4. Ocean currents are affected by the configuration of the ocean floor.

Which of these statements are correct?

Assertion (A): During the Neap Tides, the high tide is lower and the low tide is higher than usual. Reason (R): The Neap Tide, unlike the Spring Tide, occurs on the New Moon instead of on the Full Moon.

Consider the following statements: I. Tides are of great help in navigation and fishing. II. High tide enables big ships to enter or leave the harbour safely. III. Tide prevents siltation in the harbours. IV. Kandla and Diamond Harbour are tidal ports.

Which of these statements are correct?

Match List I with List II

and select the correct answer using the codes given below the Lists:

List I (Oceanic Trench) I. Aleutian II. Kermadec III. Sunda IV. S. Sandwich

List II (Location) A) Indian Ocean B) North Pacific Ocean C) South Pacific Ocean D) South Atlantic Ocean

Codes:

In the given map,

which one of the following pairs of ocean currents is shown?

At

which one of the following positions shown in the diagram will the height of the ocean tide be maximum? The original diagram is not available for this question.

Which one of the following factors is responsible for the change in the regular direction of the ocean currents in the Indian Ocean?

Consider the map given below: The divisions along India’s coastal region indicate