Match List-I with List-II:

List-I (Method)	List-II (Estimation)
(A) Kjeldal method	(I) Estimation of Soil moisture
(B) Walkley and Black method	(II) Estimation of Sedimentation of soil particles
(C) Hydrometer method	(III) Estimation of Organic carbon
(D) Gravimetric method	(IV) Estimation of Nitrogen

Choose the correct answer from the options given below:

Correct option is C

Kjeldal method → Estimation of Nitrogen (IV)
Walkley and Black method → Estimation of Organic Carbon (III)
Hydrometer method → Estimation of sedimentation/particle size (II)
Gravimetric method → Estimation of soil moisture (I)
Thus, the correct match is: A–IV, B–III, C–II, D–I