Question

Match List-I with List-II.

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
• C. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
• D. (A)-(III), (B)-(IV), (C)-(IV), (D)-(I)

Hint:

Always try to recall which physical law governs a specific soil or environmental property when answering match-the-following questions.

Answer 1

The Correct Option is B

(A) Saturated flow in soil is described by Darcy’s law, which explains fluid flow through porous media.
(B) Soil textural analysis relates to the motion of particles, which is explained by Stokes law.
(C) The relationship between radiation wavelength and temperature is given by Wien’s law.
(D) Diffusive flux of gases follows Fick’s law, which governs diffusion processes.

Answer 2

Elimination approach:
Since (A) describes saturated flow of water through a porous medium, it must pair with Darcy's law. This immediately rules out any option where (A) is not linked to Darcy's law. Next, (B) concerns the settling behaviour of soil particles during textural analysis, which is governed by Stokes' law, ruling out any remaining option that does not place Stokes' law against (B). Similarly, (C), relating wavelength of emitted radiation to temperature, can only correspond to Wien's law, and (D), describing diffusive gas flux, can only correspond to Fick's law. Checking these four pairings against the given choices, only the option reading (A)-(II), (B)-(IV), (C)-(I), (D)-(III) satisfies all four conditions simultaneously, confirming it as correct.