All Free Agriculture MCQs with Answers

• A. Both A & B
• B. Noshki
• C. Desert of Kharan
• D. Qilla SaifUllah

Explanation: The Kharan Desert and the Noshki area are arid regions of Balochistan where sparse vegetation allows wind erosion, apart from the rocky…

• A. Primary nutrients
• B. None of these
• C. Excellent nutrients
• D. Minor nutrients

Explanation: Calcium, magnesium and sulphur are classified as secondary plant nutrients, not primary or micronutrients.

• A. Micro elements
• B. Trace elements
• C. Both A & B
• D. None of these

Explanation: Iron, zinc, manganese, molybdenum, cobalt, nickel and copper occur in very small quantities and are called micronutrients or trace…

• A. both A & B
• B. Transportation
• C. Detachement of soil
• D. None of theseSoil

Explanation: Soil erosion involves both detachment of soil particles and their transportation by agents such as water and wind.

• A. English
• B. Latin
• C. Greek
• D. None of the above

Explanation: The word soil comes from the Latin solum, meaning ground or floor. This root is also reflected in the scientific study of soils, called…

• A. Kaolinite
• B. Montmorillonite
• C. Vermiculite
• D. Illite

Explanation: Vermiculite generally has the highest cation exchange capacity among the listed clay minerals, followed by montmorillonite, illite and…

• A. Six sided arrangement
• B. Eight sided arrangement
• C. both A & B
• D. Four sided arrangement

Explanation: A silica tetrahedron has one silicon atom surrounded by four oxygen atoms, giving it four coordinated corners.

• A. Mo
• B. Al
• C. Zn
• D. Mg

Explanation: In strongly acidic soils, soluble aluminium becomes toxic to roots and restricts root growth and nutrient uptake.

• A. Winogradsky & R. Morphy
• B. Bennett & Dokuchaev
• C. Winogradsky & Dokuchaev
• D. both A & B

Explanation: Hugh Hammond Bennett is known as the father of soil conservation, while Vasily Dokuchaev is regarded as the father of modern pedology.

• A. Corn
• B. Rice
• C. Cotton
• D. Carrot

Explanation: Cotton is considerably more salt-tolerant than corn, rice, and carrot, so it can produce relatively better yields in saline soils.

• A. Microspores
• B. Diameter
• C. Mesopores
• D. Biopores

Explanation: Biopores are soil channels formed by biological activity, especially the growth and decay of plant roots and the movement of earthworms.

• A. 269,810 km2
• B. 259,710 km2
• C. 278,910 km2
• D. None of these

Explanation: Aridisols occupy about 259,710 square kilometres in the commonly cited soil-area classification of Pakistan.

• A. Alluvial soil
• B. Aeolian soil
• C. Transported soil
• D. None of theseGeology

Explanation: Transported soils develop from weathered material moved away from its original place by water, wind, ice, or gravity.

• A. 1624
• B. 1724
• C. 1824
• D. 1924

Explanation: The International Union of Soil Sciences was founded in 1924 to promote international cooperation in soil science.

• A. 0.44
• B. 0.33
• C. 0.22
• D. None of these

Explanation: Organic matter has a specific heat of about 0.44 cal g⁻¹ °C⁻¹, higher than most mineral soil constituents because it stores more heat per…

• A. Soil texture
• B. Soil structure
• C. Layers of soil
• D. All of these

Explanation: A soil horizon is a distinct layer approximately parallel to the soil surface, identified by differences in properties such as colour…

• A. Alkalization
• B. Desalinization
• C. All off these
• D. Salinization

Explanation: Salinization is the accumulation of soluble salts in soil, commonly caused by poor drainage, saline irrigation water and evaporation.

• A. Aridisols
• B. Entisols
• C. Vertisols
• D. Inceptisols

Explanation: Aridisols are the most extensive soil order in Pakistan because much of the country has arid or semi-arid conditions with limited moisture…

• A. Acidic
• B. Alkaline
• C. Acidic & Alkaline
• D. Calcareous

Explanation: Soils near canal banks may become alkaline because canal seepage raises groundwater and evaporation concentrates salts and sodium near the…

• A. Pedologist
• B. Soil chemist
• C. agronomistSoil
• D. Edaphologists

Explanation: Edaphologists study soil in relation to plant growth and production, whereas pedologists focus more broadly on soil formation…