agriculture MCQs – Page 163

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 Review each marked answer and report any item that may be outdated or unclear.

3241. Father of agricultural chemistry is___________________?
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A. Neuron

B. Neil Brady

C. Vonliebig

D. J. jones

3242. pH of Pakistani soils is____________________?
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A. 14

B. 12

C. 7

D. 7.5
3243. The available form of sulphur for plant is___________________?
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A. SO3

B. S2

C. SO2

D. SO-2
3244. Lithosphere refers to____________________?
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A. Zone of ozone

B. Zone of earth crust

C. Zone of water

D. Zone of atmosphere

3245. Primary air pollution is____________________?
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A. SO

B. SO3

C. SO2

D. None of the above

3246. Most of the productive soils in Pakistan have pH______________________?
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A. None of the above

B. 8.5

C. Between 7.5 to 8.5
3247. The chemical formula of Dolomite is________________?
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A. CaMg (CO3)2

B. MgCO3

C. None of the above

D. CaCO3

3248. Formula used for the calculation of sodium absorption ratio is______________________?
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A. SAR=Na / CEC x 100

B. SAR=Na / CEC x 100

C. SAR=Na / [(Ca+Mg)1/2] Na x 2

D. None of these

3249. Large pieces of erupted magma are called_____________________?
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A. Volcanic block

B. Volcanic ash

C. Dike

D. Sill

3250. Vertical movement of water was studied by_________________?
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A. Niel

B. Darcy

C. Ziebig

D. Kohler

3251. Who gave the defination of humic acid ?
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A. Gapon

B. Liekig

C. Neir

D. Felbeek
3252. Organic soil are called____________________?
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A. Peat

B. Arid soil

C. Muck

D. Both a & b
3253. Gravimetric water is present in______________________?
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A. None of the above

B. Macro pores

C. Micro pores

D. Meso pores

3254. Places where volcanoes occur are_________________?
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A. All the above

B. Pacific ocean

C. Mid-Atlantic ridge

D. Mediterranean sea

3255. Percentage of N in Ammonium ritract fertilizer is___________________?
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A. 21

B. 39

C. 23

D. 33
3256. The site of grains present in sands structuring range__________________?
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A. 0.0625 mm dia

B. 0-1.0 mm dia

C. None of the above

D. 1.00 0.0625 mm dia

3257. The atmospheric layer lies closest to the earth surface is known as___________________?
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A. Stratosphere

B. Thermosphere

C. Mesosphere

D. Troposphere
3258. Chitin and steroids are_____________________?
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A. Waxes

B. Carbohydrates

C. Proteins

D. Lipids

3259. Which one of the following are macro nutrients__________________?
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A. N,P,K

B. Ca,Mg,S

C. All the above

D. C,H,O

3260. Structure and size of aphantic rock is________________?
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A. Large-Glassy

B. Phenocryst

C. Fine grained

D. Course-grained like