agriculture MCQs – Page 166

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 Review each marked answer and report any item that may be outdated or unclear.

3301. The net reaction of photosynthesis is_____________________?
comments icon0

A. None of the above

B. CaCO3 + 2HCl CaCl2 H2O+CO3

C. CO2 + H2O light O2 + (CH3O)

D. ((CH2O) + O2 CO2 + H2O)

3302. Acid soil contain pH____________________?
comments icon0

A. 8.5

B. >7

C. >7.0

D.
3303. Cyclic salts are mostly of ______________________?
comments icon0

A. None of the above

B. Cl

C. SO4

D. HCO<sub>3</sub>

3304. International atomic weight of potassium is_________________?
comments icon0

A. 41

B. 40

C. 38

D. 39.0
3305. Mechanisms of material uptake by plants is by____________________?
comments icon0

A. Diffusion

B. Mass flow

C. Root interception

D. Osmosis

3306. Shrinking and swelling is property of__________________?
comments icon0
A. Smecitie

B. Water

C. Silk

D. Clay

3307. The particlesw density of a mineral soil is about____________________?
comments icon0

A. 2550 Kg m-3

B. 2650 Kg m-3

C. 2750 Kg m-3

D. None of the above

3308. hydrosphere refers to______________________?
comments icon0
A. Zone of water

B. Zone of earth crust

C. Zone of atmosphere

D. Zone of air

3309. Physical condition of soil for plant growth is called___________________?
comments icon0

A. All the above

B. Granulation

C. Tilth

D. Tillage

3310. The salinity can be reduced by the application of___________________?
comments icon0

A. All the above

B. Urea

C. Lime

D. Sulphuric acid

3311. Buffer solution is a solution which resist change in __________________ ?
comments icon0

A. SAP

B. pH

C. EC

D. RSC

3312. Chromium (Cr) is a____________________?
comments icon0

A. Secondary element

B. Heavy metal

C. Free element

D. Macro element

3313. Kaolinite can be identified by______________________?
comments icon0

A. Boiling

B. Breaking

C. X-ray diffraction

D. Spectrophotometer

3314. Examples of micro biota are____________________?
comments icon0

A. Protozoa

B. Virus

C. Both a & b

D. None of the above

3315. Permanente wilting point of clayey soils is not less than____________________?
comments icon0
A. 10%

B. 20%

C. 15%

D. 5%

3316. The problem of soil crosion Thal and Cholistan is predominantly due to___________________?
comments icon0

A. Air

B. Wind

C. Water

D. All the above

3317. Who characterized soil formation as set of 4 process______________________?
comments icon0
A. Simonson

B. Jinney

C. Ziking

D. Newton

3318. Plutonic rocks are also called____________________?
comments icon0

A. Extrusive igneous rock

B. Sedimentary

C. Intrusive igneous

D. Metamorphic

3319. Algal photosynthesis increases pH of water and releases___________________?
comments icon0

A. O2

B. All the above

C. CO2

D. SO3

3320. Identify the fertilizer (s) containing potassium____________________?
comments icon0
A. All the above

B. MOP

C. Chilean salt peter

D. SOP