Solar ponds (A) produce potable water (B) are thermal energy collectors (C)…
2022
Solar ponds
(A) produce potable water
(B) are thermal energy collectors
(C) use salt gradient to inhibit heat loss
(D) are used for swimming in cold regions
(E) produce heated water
Choose the correct answer from the options given below:
Answer: B. B, C and E only — ConceptA solar pond is a body of saline water designed to collect and store solar thermal energy. Its increasing salt concentration with depth suppresses…
- A.
A, B and C only
- B.
B, C and E only
- C.
A, B, C and D only
- D.
B, C, D and E only
Attempted by 1 students.
Show answer & explanation
Correct answer: B
Concept
A solar pond is a body of saline water designed to collect and store solar thermal energy.
Its increasing salt concentration with depth suppresses natural convection, so heat absorbed in the lower layer is not readily carried to the surface and lost.
Application
Statement B identifies the pond as a thermal-energy collector.
Statement C gives its key heat-retention mechanism: the salinity gradient limits convective mixing and therefore reduces heat loss.
Statement E describes a practical thermal output: the stored heat can be transferred to produce hot water.
Contrast
Statement A describes potable-water production, which requires a separate desalination process rather than defining the solar pond itself.
Statement D describes recreational swimming, which is not the purpose of a high-salinity thermal storage pond.
Therefore, the applicable statements are B, C and E only.