Ocean thermal energy is a useful source of energy when the temperature difference between surface and depth of 2km is:

Less than

10^{\circ} C

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More than

10^{\circ} C

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Less than

20^{\circ} C

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More than

20^{\circ} C

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Solution

The correct option is D More than $20^{\circ} C$
Ocean thermal energy conversion plants can operate if the temperature difference between the water at the surface and water at depths up to 2 km is $20^{\circ} C$ or more.

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Ocean thermal energy is a useful source of energy when the temperature difference between surface and depth of 2km is:

The correct option is D More than 20∘COcean thermal energy conversion plants can operate if the temperature difference between the water at the surface and water at depths up to 2 km is 20∘C or more.

The correct option is D More than $20^{\circ} C$
Ocean thermal energy conversion plants can operate if the temperature difference between the water at the surface and water at depths up to 2 km is $20^{\circ} C$ or more.