agriculture MCQs – Page 101

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 Review each marked answer and report any item that may be outdated or unclear.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

2001. Most of the productive soils in Pakistan have pH______________________?
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A. 8.5

B. None of the above

C. Between 7.5 to 8.5

2002. 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. None of these

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

2003. Which one of the following is anti ripening agent___________________?
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A. Meleic hydrazide

B. 2,4,5 trichlorophenoxy acetic acid

C. Sulphur dioxide

D. Sodium benzoate

2004. Color of fertile soil is_____________________?
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A. Green

B. White

C. Brown

D. Black

2005. Which of the following is the method of food preservation ________________________?
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A. Salting

B. Drying

C. Smoking

D. All the above

2006. Which element can be fixed by smecitite___________________?
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A. Mg

B. K

C. NH2

D. Both b & c

2007. Which one of the following is used as antioxidant____________________?
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A. EDTA

B. None of the above

C. DT

D. DNA

2008. Oxidation as well as condensation reaction similar to non-browning due to irradiation have been observed in__________________?
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A. Lipids

B. non of these

C. Protein

D. Carbohydrates

2009. A soil is categorized as saline when EC of saturation extract is______________________?
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A. 0.4dsm-1

B. 0.4 4.0 dsm-1

C. >4dsm-1

2010. Foods having pH value of below 3.7 are called____________________?
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A. Medium acid foods

B. Acid foods

C. Low acid foods

D. High acid foods

2011. The molar mass of NaCl is_____________________?
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A. 58.58

B. 50.58

C. 56.58

D. 43.28

2012. Which instrument is used for determining soil texture___________________?
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A. All the above

B. Hydrometer

C. Lysimeter

D. Thermometer

2013. The interaction of polysaccharides form ____________________?
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A. None of the above

B. Hydrogen bonds

C. Carbon bonds

D. Nitrogen bonds

2014. The net reaction of photosynthesis is_____________________?
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A. None of the above

B. CO2 + H2O light O2 + (CH3O)

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

D. CaCO3 + 2HCl CaCl2 H2O+CO3

2015. Mineral soil contain organic carbon___________________?
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A. >10%

C. 5%

D. >4%

2016. When sugars heated under controlled conditions in the absence of water, they form an hydro sugar, that readily polymerized to give typical taint and brown pigment this process is called _________________?
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A. Caramalization

B. Browning

C. Mail lard reaction

D. Purification

2017. The deficiency of vitamin B-1 is adults causes_____________________?
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A. Depressions

B. All the above

C. Irritability

D. Fatigue

2018. Protein denaturation is brought about by_________________?
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A. pH of the medium

B. All the above

C. Ionic strength

D. Heat

2019. Igneous rock whose crystal is 1 cm called____________________?
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A. Pegmatitic

B. Mafic

C. Plutonic

D. Felsic

2020. Microbial gum used in food serve as_________________?
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A. Stabilizer

B. Emulsifier

C. Thickener

D. All the above

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