When dissolved in water, which of the following produces an ionic solution?

(i) Very dark, cracking clay-dominated soils;

(ii) locally called regur, karail, and bhal;

(iii) high clay varying from 30–60%, base-rich;

(iv) occur in Maharashtra, Madhya Pradesh, Gujarat, Rajasthan, Chhattisgarh and some parts of Karnataka and T.N. __________- is called

[A] Black Soils
[B] Alluvial Soils
[C] Red Soils
[D] Laterite and Lateritic Soils

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The following is the list of pesticides:

[a] B.H.C.

[b] D.D.T.

[c] NaCN

[d] Heptachlor

[e] Carbendazim

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Objective of GIS

[A] Maximizing the efficiency of planning and decision-making.

[B] Providing efficient means for data distribution and handling.

[C] Elimination of redundant database – minimize duplication.

[D] Capacity to integrate information from many sources.

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Match List-I with List-II

List-I (Characteristic)

(A) Si is replaced by Al³⁺ ions

(B) Attachment of Ca²⁺ on clay surface

(C) Na⁺ replacing other cations on clay surface

(D) H dissociated from hydroxyl ions on clay surface

List-II (Terminology)

(I) Ionic double layer

(II) pH dependent charge

(III) Dispersion of clay

(IV) Isomorphous substitution

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