| List I (Structural characteristics of the minerals) |
List II (Type of clay mineral) |
| A. Presence of K ion in the interlayer space of crystal structure in clay |
I. Vermiculite minerals |
| B. Mg ions are adsorbed between the crystal units of clay minerals |
II. Smectite |
| C. Presence of one brucite layer (Mg(OH)₂) along with 2:1 type of clay mineral in the crystal lattice |
III. Illite |
| D. 2:1 type of expanding minerals |
IV. Chlorite |
A → III (Illite): Illite has K⁺ ions in the interlayer, making it non-expanding.
B → I (Vermiculite): Mg²⁺ ions are adsorbed between layers, giving it intermediate expansion.
C → IV (Chlorite): Has a characteristic brucite layer in addition to the 2:1 structure.
D → II (Smectite): Includes minerals like montmorillonite, which exhibit high swelling due to their expanding nature.
English
20 Questions
80 Marks
24 Mins English English75 Questions300 Marks90 Mins English English30 Questions30 Marks27 Mins English| Set A (Scientist) |
Set B (Contribution) |
| [i] Thomas Way |
[a] Borax |
| [ii] Thomas Graham |
[b] Ammonium molybdate |
| [iii] Sorenson |
[c] Copper sulphate |
| [iv] Schofield |
[d] Zinc sulphate |
| Set A |
Set B |
| [i] Robinson |
[a] Pipette method |
| [ii] Yoder |
[b] Wet sieving |
| [iii] Munsell |
[c] Colour chart |
| [iv] Atterberg |
[d] Consistency limits |
The most widely used vegetation index is
Which one of the following is the active factor of soil formation?
The highest category of soil classification system is
The essentiality of Molybdenum was discovered by
Resource Conservation Technologies include: A) Zero or Minimum Tillage B) Direct Seeding C) Bed planting with residue mulch
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