MCAER PG CET 2026 SOIL SCIENCE AND AGRIL CHEMISTRY

 

MCAER PG CET 2026
Soil Science (Topper Level)

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1. The mineral responsible for most of the cation exchange capacity (CEC) in tropical soils is:

Kaolinite Montmorillonite Illite Quartz

2. The soil order most commonly associated with high shrink–swell potential is:

Entisols Vertisols Inceptisols Alfisols

3. PYQ (MCAER PG CET 2024) The nutrient most affected by soil pH in terms of availability is:

Nitrogen Phosphorus Potassium Sulphur

4. The process of conversion of ammonium to nitrate in soil is called:

Ammonification Nitrification Denitrification Immobilization

5. The soil water available to plants lies between:

Saturation and field capacity Field capacity and permanent wilting point Hygroscopic coefficient and PWP Saturation and hygroscopic coefficient

6. PYQ (MCAER PG CET 2022) The main clay mineral dominating black cotton soils is:

Kaolinite Montmorillonite Illite Chlorite

7. Soil salinity is primarily measured by:

Electrical conductivity Soil pH Organic carbon Base saturation

8. PYQ (MCAER PG CET 2021) The most stable fraction of soil organic matter is:

Fulvic acid Humic acid Humin Carbohydrates

9. The loss of nitrate nitrogen from soil under anaerobic conditions is called:

Nitrification Denitrification Mineralization Immobilization

10. The soil property responsible for nutrient buffering capacity is mainly:

Soil texture Cation exchange capacity Soil color Soil temperature