GATE XE 2021 Paper 1 — page 58

Complete GATE XE 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 172–174 of 175. Imported answers require review unless explicitly marked reviewed.

Paper practice 175 questionsPage 58 of 59

An eastward flow with a speed of 10 m s⁻¹ goes from station M to station N, which are separated by a distance of 1 km. The temperature at station N is always higher than that at station M by 10 K. The absolute change in temperature due to advection at the mid-point between the stations in 50 s is ____ K (round off to nearest integer).

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Suppose, because of the doubling of atmospheric CO₂ concentration, an ocean water column receives an additional net energy input of 1 Wm⁻². If the entire water column of depth 1 km heats up uniformly, the water temperature will increase by 1 K in ____ years (round off to the nearest integer).

Assume all the additional heat added is retained and not lost. Take density of seawater = 1000 kg m⁻³; specific heat capacity of seawater = 4200 J kg⁻¹ K⁻¹.

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Consider a layer of atmosphere between 5 and 6 km height. The downwelling longwave radiation at 5 and 6 km is 240 and 230 Wm⁻², respectively. The upwelling longwave radiation at these heights is 260 and 240 Wm⁻², respectively. The longwave heating rate in this layer is ____ K per day. (Round off to one decimal place.)

Take the average density of air in this layer to be 0.5 kg m⁻³; Specific heat capacity of air at constant pressure = 1000 J kg⁻¹ K⁻¹.

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2021 · Paper 1

Question 19

Question 20

Question 21