GATE XE Ocean Sciences PYQs & Answers

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

Questions 1–10 of 100. Imported answers require independent review unless marked reviewed.

Topic practice 100 questionsPage 1 of 10

What is the approximate value of annual-mean pH of seawater at the surface in the northern Indian Ocean?

Your answerChoose one option.

4.5

5.0

8.0

11.0

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Which of the following statements based on the given figure is / are TRUE with respect to the upwelling process in the ocean?

Diagram for Engineering Sciences question 158

Your answerSelect all correct options. You can choose more than one.

Wind is northerly.

Wind is southerly.

Event occurs in the southern hemisphere.

Event occurs in the northern hemisphere.

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If 20 wave crests pass a fixed point in an interval of 5 minutes, then the frequency of the wave (in Hertz) is ______. (rounded off to three decimal places)

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In a two-layered fluid system, temperature and salinity values are given for cases P, Q and R. Which of the following options indicates that the process of ‘salt fingering’ is likely to occur?

Case	Upper layer	Lower layer
P
Q
R

Your answerChoose one option.

Only P

Only Q

Q and R

P and R

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From the given cases (P, Q, R and S), which represents the annual mean profile of dissolved oxygen in the Bay of Bengal?

Diagram for Engineering Sciences question 165

Your answerChoose one option.

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The given figure illustrates a subtropical gyre in the Southern Indian Ocean.

Identify the currents in the correct sequence of P, Q, R and S, respectively from the following options.

Diagram for Engineering Sciences question 166

Your answerChoose one option.

South Equatorial Current, West Australian Current, Madagascar Current and South Indian Ocean Current

South Equatorial Current, Madagascar Current, West Australian Current and South Indian Ocean Current

South Equatorial Current, Madagascar Current, South Indian Ocean Current and West Australian Current

South Equatorial Current, South Indian Ocean Current, Madagascar Current and West Australian Current

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Which of the following is/are generally associated with a cyclonic eddy in the northern Indian Ocean?

Your answerSelect all correct options. You can choose more than one.

Upwelling

Positive sea level anomaly

Negative sea level anomaly

Downwelling

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Which of the following statements is/are correct for the Equatorial Indian Ocean during a positive Indian Ocean Dipole event?

Your answerSelect all correct options. You can choose more than one.

Strong surface westerly winds

Weak surface westerly winds

Positive Sea Surface Temperature anomaly in the western region

Negative Sea Surface Temperature anomaly in the western region

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A steady westerly wind is blowing over the ocean surface at a latitude of 30°N and exerting a wind stress of 0.8

The magnitude of net volume transport (in

) per unit width is _____. (rounded off to three decimal places)

[Density of seawater is 1025

, angular velocity of the Earth is

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Using the dispersion relation for deep water small amplitude wave, the wavelength (in m) for a 20 second gravity wave is _____. (Answer in integer)

[Take acceleration due to gravity as 9.81

]

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GATE XE Ocean Sciences PYQs

How to practice Ocean Sciences

Question 156

Question 158

Question 160

Question 163

Question 165

Question 166

Question 167

Question 169

Question 172

Question 174