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%

B.

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
2021. Milk proteins of cow milk contains maximum amount of____________________?
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A. Serum albumin

B. ?-lacto globulin

C. All the above

D. ?-lactolbumin

2022. The storage life of grapes at 32F with R.H of 90% is_____________________?
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A. 1-2 weeks

B. 5-6 weeks

C. 3-8 weeks

D. 2-4 weeks
2023. Protein denaturation is the result of the modification of____________________?
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A. Primary structure

B. Secondary structure

C. Tertiary structure

D. Both b & c
2024. The food in which the moisture content is less than 15% is called_____________________?
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A. Stable foods

B. Perishable foods

C. Acid food

D. Semi perishable foods

2025. Texture of pastries, cookies and crackers is evaluated by_________________?
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A. Short meter

B. Warner-Bratzler sheer

C. Compress meter

D. All the above

2026. The storage life of onions at 32F with R.H of 75% is__________________?
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A. 6-8 months

B. 2-4 months

C. 8-10 months

D. 4-6 months
2027. A soil is classified as sodic soil when______________________?
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A. EC is 8.5

B. SAR is >13

C. All the above

2028. The deficiency of vitamin B-2 is adults causes___________________?
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A. Cheilosis

B. All the above

C. Glostitis

D. Eye itching

2029. Storage life of peaches & pears 31F with R.H of 90% is _____________________?
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A. 2-4 weeks

B. 2-3 weeks

C. 1-2 weeks

D. 2-6 weeks

2030. Na and k can be determined by the use of____________________?
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A. Hydrometer

B. All the above

C. Spectrophotometer

D. Flame photometer
2031. Vitamin C is called___________________?
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A. Citric acid

B. Trataric acid

C. Malic acid

D. Ascorbic acid
2032. Most food poisoning organisms prefer to grow in the pH range of___________________?
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A. 4-5

B. 5

C. 5-Apr

D. Above 5

2033. The chemical formula of urea fertilizer is_______________________?
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A. NH<sub>2</sub>CONH<sub>2</sub>

B. [CO(NH<sub>2</sub>)]

C. Both a & b

D. None of the above

2034. The consumption of several flavours and micromtrients per person per year is__________________?
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A. .> 0.01 mg

B. mg

C. None of the above

D. .< 0.01 mg
2035. Per day consumption of food in developed countries ranges between___________________?
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A. 200-3000

B. 1500-2000 Kcal

C. 3000-3500 Kcal

D. None of the above

2036. Permanent change in soil is due to__________________?
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A. Covalent bonding

B. Ionic bonding

C. pH change

D. Isomorphic substitution
2037. the enzyme that destroys vitamin B-1 is__________________?
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A. Thiaminase

B. None of the above

C. Oxalate

D. Phenolase

2038. Enzyme proteases is used for _____________________ ?
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A. Tenderizing meat

B. None of the above

C. Removal of molecular oxygen dissolved at the surface of products

D. Clarification of fruit juice

2039. Egg quality is determined by_____________________?
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A. Germ spot

B. All the above

C. Yolk

D. Albumin

2040. Salt-tolerant plants are called ____________________?
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A. Xerophytes

B. Halophytes

C. Glycophytes

D. All the above

2041. Per day the developing countries consume food corresponding to_________________?
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A. None of the above

B. 1000-1500 Kcal

C. 1500-1800 Kcal

D. 1800-2000 Kcal
2042. In dairy products such as cheese and condensed milk the preservative used is______________________?
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A. Parabens

B. Epexider

C. Nisim

D. All the above

2043. Kaolinite can be identified by______________________?
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A. Boiling

B. X-ray diffraction

C. Breaking

D. Spectrophotometer

2044. Tuff is__________________?
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A. Consolidated ash

B. Soil

C. Volcanic ash

D. Water

2045. Which compound is mostly used in Pakistan for the reclamation of saline-sodic & sodic soils_________________?
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A. Apatite

B. Gypsum

C. Dolomite

D. Calcite

2046. Places where volcanoes occur are_________________?
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A. All the above

B. Mid-Atlantic ridge

C. Pacific ocean

D. Mediterranean sea

2047. Soy sauce is the fermented product of_____________________?
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A. Wheat

B. Barley

C. Oat

D. Soybeans

2048. Product of microorganism that appears to chelate calcium is called_____________________?
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A. Pyruive acid

B. Phospheric acid

C. Carbon dioxide

D. 2-ketoghconic acid
2049. The site of grains present in sands structuring range__________________?
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A. 1.00 0.0625 mm dia

B. None of the above

C. 0-1.0 mm dia

D. 0.0625 mm dia
2050. Mollic refers to____________________?
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A. Surface horizon

B. C-horizon

C. B-horizon

D. U-horizon