agriculture MCQs – Page 159

Practise multiple-choice questions from agriculture for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

agriculture Mcqs

1. soil science 2. agronomy 3. entomology 4. water management 5. horticulture 6. agricultural economics 7. plant pathology 8. food technology 9. animal husbandry 10. plant breeding and genetics

3161. Na and k can be determined by the use of____________________?
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A. Hydrometer

B. All the above

C. Flame photometer

D. Spectrophotometer

3162. Which element can be fixed by smecitite___________________?
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A. Mg

B. K

C. NH2

D. Both b & c

3163. Deficiency of B can be corrected through application of chemical fertilizer of_________________?
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A. Borax

B. Boric acid

C. Solubor

D. All the above

3164. A compound toxic to crop formed by the thermal decomposition of urea is_________________?
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A. Uric acid

B. Biurct (NH2CONH CONH2 H2O)

C. Diuret

D. Both b & c

3165. Histols are found in______________________?
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A. Pakistan

B. Canada

C. Alaska

D. Both b & c

3166. DAP fertilizer available in Pakistan contains__________________________?
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A. 100%P2O3

B. 46%N & 18%P2O3

C. 18% N & 46% P2O5

D. 50%P2O3

3167. The chemical formula for Ammonium acctatc is_____________________?
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A. NH3OAC

B. NH4OAC

C. NH4AOC

D. Both b & c

3168. Mean annual precipitation for tundra region is ____________________?
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A. None of the above

B. 150-70 cm

C. 0-50 cm

D. 70-80 cm

3169. An expression of the intensity of the basic or a acidic condition of a liquid or of soil is called_____________________?
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A. ESR

B. pH

C. EC

D. SAR

3170. TSP contains____________________?
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A. 46%P

B. 14%

C. 40%P

D. 50%P

3171. Boron concentration is irrigation water is considered safe only upto_________________?
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A. 0.7 ppm

B. 2 ppm

C. 3 ppm

D. 1.5 ppm

3172. Mollic refers to____________________?
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A. C-horizon

B. U-horizon

C. Surface horizon

D. B-horizon

3173. Permanent change in soil is due to__________________?
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A. pH change

B. Covalent bonding

C. Isomorphic substitution

D. Ionic bonding

3174. The aggregation of individual particles is called___________________?
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A. Granulation

B. Texture

C. Flocculation

D. Structure

3175. Radiation can be detected by the blankening of photographic film or by using___________________?
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A. Ratio autoanalyser

B. GM counter

C. Neutron probe

D. Dosimeter

3176. C12H12N-NaO8S2 is the chemical formula of ____________________?
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A. Carbonated sodium sulphate

B. Azomethine H

C. Activated charcoal

D. None of the above

3177. Rocks which are formed by disintegration of pre-existing rocks by weathering are____________________?
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A. Greis

B. Sand stone

C. Classics

D. Igneous

3178. The water loss through transpiration from vegetative and evaporation from soil surface is known as__________________?
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A. Evaporation

B. Evaptranspiration

C. Guttation

D. Transpiration

3179. Soil particles having diameter greater than 2 mm are called___________________?
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A. Gravel

B. Silt

C. Clay

D. Sand

3180. The time for which water and ion remains in vicinity is called_____________________?
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A. Residence time

B. ppm

C. Primary hydration

D. Normality

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