agriculture MCQs – Page 39

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 Review each marked answer and report any item that may be outdated or unclear.

1901. Which one of the following is synthetic flavour __________________?
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A. All the above

B. Esters

C. Ketones

D. Aldehydes

1902. Acid soil contain pH____________________?
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A. >7

B.

C. >7.0

D. 8.5

1903. The storage life of dried fruit at 32F with R.H of 60% is___________________?
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A. 6-8 months

B. 9-12 months

C. 8-10 months

D. 4-6 months

1904. The food colour measurement can be obtained by ___________________?
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A. Tint meters

B. All the above

C. Disc colourimetry

D. Spectrophotometer

1905. Shrinking and swelling is property of__________________?
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A. Water

B. Clay

C. Silk

D. Smecitie
1906. Gelatinization is the process in which ____________________?
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A. Starch granules swell rapidly and lose birefringence

B. Starch granules do not swell rapidly and lose birefringence

C. Starch granules collide frequently causing a reduction in viscosity

D. Both a & b
1907. WHO recommended daily intake of calcium for adults is _____________________?
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A. 400-500 mg

B. 200-300 mg

C. 300-400 mg

D. All the above

1908. Which soil bolds more water ?
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A. Sitry

B. Sandy

C. Stony

D. Clayey
1909. DAP fertilizer available in Pakistan contains__________________________?
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A. 100%P2O3

B. 46%N & 18%P2O3

C. 50%P2O3

D. 18% N & 46% P2O5
1910. Approximately quantity of milk required to prepare 1 kg of cheese is_____________________?
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A. 8 Kg

B. 12 Kg

C. 10 Kg

D. 5 Kg

1911. When fresh meat in a butchers shop is cut, the newly exposed surface, on coming in contact with oxygen becomes______________________?
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A. Red

B. Pinkish

C. Brownish

D. Bright red

1912. The chemical formula of Hematite is_____________________?
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A. Fe2O3

B. AL (OH)2

C. None of the above

D. Fe OOH

1913. Approximate calories in one cup of white cooked rice is __________________?
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A. 175

B. 150

C. 225

D. 201
1914. The storage life of Butter at -20F With R.H of 85% is_____________________?
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A. 4 months

B. 8 months

C. 12 months

D. 6 months

1915. C6H12O6 Yest 2C2H2OH+2CO2__________________?
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A. All the above

B. Lactic fermentation

C. Acetic fermentation

D. Alcoholic fermentation
1916. Fermentation industries include______________________?
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A. Wine making

B. Baking

C. all the above

D. Brewing

1917. Histols are found in______________________?
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A. Pakistan

B. Canada

C. Alaska

D. Both b & c
1918. Structure and size of aphantic rock is________________?
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A. Phenocryst

B. Course-grained like

C. Fine grained

D. Large-Glassy

1919. Severe diarrhea and dehydration in human is due to lack of__________________?
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A. All the above

B. Lysine

C. Rennin

D. Lactase
1920. When two or more functional groups of single ligand are coordinated to metal cation the complex is termed as___________________?
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A. Chelate

B. Solution complex

C. All the above

D. Complex ion

1921. The concentration of ethylene required for the ripening of Banana is______________________?
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A. 5 ppm with 24 hr

B. 15 ppm with 24 hr

C. 10 ppm with 24 hr

D. 12 ppm with 24 hr

1922. Oxidative rancidity is promoted by ____________________?
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A. Catalysis

B. All the above

C. Enzymes

D. Heat

1923. Which type of bacteria grow best at room temperature of 20____________________?
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A. All the above

B. Mesophilic

C. Thermophilic

D. Psychrophilic

1924. Main product of photosynthesis is_____________________?
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A. C6H12O6

B. C5H12O6

C. C12H24O12

D. C3H6O6

1925. Who gave the equation for study of soil property ?
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A. Ziebig

B. Newton

C. Neil

D. Jenny
1926. Amino acid with no polar R group are____________________?
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A. Hydrophobic

B. Aromatic

C. None of the above

D. Hydrophilic

1927. Some substance are added intentionally to foods for the purpose of marketing them more profit able are known as_____________________?
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A. All the above

B. Food contamination

C. Food adulterants

D. Food additives

1928. C6H12O6 bacteria CH2CHCOOH + H2O is_____________________?
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A. Alcoholic fermentation

B. Lactic fermentation

C. All the above

D. Acetic fermentation

1929. Rhyolite in nature is______________________?
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A. Acidic

B. Basic

C. Both a & b

D. None of the above

1930. Ligands that occur in Pakistan soils are__________________?
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A. CO3-2 SO4-2

B. SO4-2 OH

C. All the above

D. OH1 HCO2

1931. 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

1932. Geochemical weathering processes occurs______________________?
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A. At the level

B. Below soil solum

C. On the mountain

D. On surface

1933. Soil particles having diameter greater than 2 mm are called___________________?
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A. Silt

B. Sand

C. Clay

D. Gravel
1934. Extension of storage life by inhibition of sprouting of potatoes, onions and garlic can be achieved by radiation dose of_________________?
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A. 0.05-0.12 kGy

B. 0.05-0.1 kGy

C. 0.05-0.15 kGy

D. non of these

1935. Felsic rocks consists of___________________?
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A. fe

B. Buiotitic

C. Quartz & Feldspars

D. Quartz

1936. Esterases, proteinases, alkali acid phosphates belongs to_____________________?
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A. Hydrolases enzyme

B. Ligases enzyme

C. Transferases enzyme

D. Oxireductases enzyme

1937. The zorawar is brand name of ___________________?
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A. None of the above

B. TSP

C. MAP

D. DAP

1938. Cyclic salts are mostly of ______________________?
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A. HCO<sub>3</sub>

B. None of the above

C. Cl

D. SO4

1939. The break down of pertinacious material is referred to as____________________?
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A. Lipolysis

B. non of these

C. Proteolysis

D. Autolysis

1940. Identify the fertilizer (s) containing potassium____________________?
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A. All the above

B. Chilean salt peter

C. MOP

D. SOP

1941. Metamorphic rocks are formed from____________________?
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A. Igneous rocks

B. Sedimentary rocks

C. Both a & b

D. Cleavage

1942. Which one of the following are macro nutrients__________________?
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A. C,H,O

B. Ca,Mg,S

C. All the above

D. N,P,K

1943. The unit of electrical conductivity is____________________?
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A. Al the above

B. dsm-1

C. ms/cm

D. mmhos/m

1944. Weathering is_______________________?
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A. Destructive process

B. Constructive process

C. Both a & b

D. None of the above

1945. Pneumatic potential is due to____________________?
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A. Petrol

B. Water

C. Soil

D. Gas
1946. Most abundant mineral in the earth crust is______________________?
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A. S-Feldspar

B. Feldspar

C. N-Feldspar

D. Amplubole

1947. The deteriorative changes originating from with in the food system is known as________________?
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A. Hydrolysis

B. Proteolysis

C. Autolysis

D. Purification

1948. Planets in our system are____________________?
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A. 10

B. 12

C. 8

D. 9
1949. Problem of erosion in Thal and Cholistan is due to____________________?
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A. Water

B. Wind

C. Fire

D. Atmosphere

1950. Which mineral contain phosphorus__________________?
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A. Metamorphic

B. Apatite

C. None of the above

D. Igneous