Agriculture :: All Aptitude Test ::

1.Which of the following is true about mold inhibition?
A. Sorbic acid is used as a mold inhibitor in cheese
B. The quantity of Sorbic acid required for mold inhibition is one third the amount of sodium benzoate required
C. Propylene glycol and tri ethylene glycol have germicidal properties
D. Sorbic acid is used as a mold inhibitor in cheese

2.Which of the following is valid when it comes to the future of antibiotics in food?
A. Should have no harmful effect on man when taken by mouth and preferably should be metabolizable
B. The economy of use, ease of use and reliability of control and detection must exist
C. Preferably compatible with other methods of permanent preservation
D. Should have no harmful effect on man when taken by mouth and preferably should be metabolizable

3.Which of the following is a naturally occurring antioxidant?
A. Hydroquinone
B. Ascorbic acid
C. Vitamin E
D. Hydroquinone

4.Which salts are used in many fruit processing operations in concentrations below 0.1% ?
A. Calcium
B. Magnesium
C. Sodium
D. Calcium

5.Which of the following microbe is used in the production of blue cheese?
A. Streptococcus thermophilus
B. Lactobacillus bulgaricus
C. Penicillium roqueforti
D. Streptococcus thermophilus

6.Bacterial cell grown on hydrocarbon wastes from the petroleum industry are a source of ?
A. carbohydrates
B. proteins
C. vitamins
D. carbohydrates

7.Yeast-cell crops harvested from the vats is used to produce which of the following compounds?
A. Alcoholic Beverages
B. Enzymes
C. Antibiotics
D. Alcoholic Beverages

8.How many tons of protein can be produced by algae grown in pond in a year?
A. 1000
B. 1
C. 50
D. 1000

9.What is the range of protein content in yeast cells?
A. 69%
B. 12-15%
C. 20-40%
D. 69%

10.Which of the following microorganism have a high vitamin content?
A. bacteria
B. yeast
C. algae
D. bacteria

11.What is the flow rate of Autoclude V8/55/24HR?
A. 350 mL/min
B. 8 L/min
C. 8 mL/min
D. 350 mL/min

12.The flow rate of Watson Marlow 501 was?
A. 350 mL/min
B. 350 dL/min
C. 350 µL/min
D. 350 mL/min

13.The flow rate of Haraeus continuous centrifuge is?
A. 10 mL/h
B. 8 L/h
C. 8 mL/h
D. 10 mL/h

14.The capacity of rotor of Cepa Z41 centrifuge is?
A. 850 g of wet cells
B. 750 g of wet cells
C. 750 g of dry cells
D. 850 g of wet cells

15.Which of the following uses the membrane to concentrate cell suspension?
A. Cepa Z41
B. Watson Marlow 501
C. Filtration
D. Cepa Z41

16. Which of the following is not the function of buffer?
A. Prevent cell lysis
B. Chelating the metals
C. Prevent protease action
D. Prevent cell lysis

17.Milk is a good source of all water-soluble vitamins except for?
A. Cyanocobalmin
B. Riboflavin
C. Ascorbic Acid
D. Cyanocobalmin

18.Is a milk process that makes milk more easily digested by those with a sensitive digestive system?
A. Ionization
B. Evaporation
C. Pasteurization
D. Ionization

19.Amino acids are commonly found in milk proteins, including the essential amino acids?
A. 7
B. 12
C. 14
D. 7

20.Summer milk has been estimated to contain 1.6 times as much vitamin as winter milk?
A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin A

21.The milk becomes the property of the buyer once?
A. The transport truck reaches the plant
B. It is loaded into the transport truck on the farm
C. The transport truck leaves the farm
D. The transport truck reaches the plant

22.Cows with have a higher incidence of mastitis because a physical injury is more likely?
A. Sickled hocks
B. Horns
C. Lower foot angles
D. Sickled hocks

23.Which of the following is untrue concerning the federal milk marketing orders?
A. They are legal instruments
B. It is a uniform system of classified pricing
C. Producers are not guaranteed a market
D. They are legal instruments

24.The or uniform price is determined by the proportion of the total delivery used in products of these classes?
A. Classified
B. Average
C. Parity
D. Classified

25.A mixture of two immiscible liquids shaken up is?
A. Saturated solution
B. Saturated solution
C. An emulsion
D. Saturated solution

26.A plant bearing both male and female flowers is said to be?
A. Dioecious
B. Monoecious
C. Polygamous
D. Dioecious

27.Bar is a gene often used in recombination study. Which of the following is true for the Bar gene?
A. It is normally present in two copies
B. Three copies of bar are called ultra bar
C. Heterozygous bar females have a less severe
D. It is normally present in two copies

28.Consider that recombination occurs in 2 strand stage of meiosis. If a Drosophila is heterozygous for the bar locus what will be the result of recombination?
A. The recombination will make them homozygous
B. It will produce ultra bar phenotype
C. It will be heterozygous
D. The recombination will make them homozygous

29.If two genes are unlinked the recombination frequency will be?
A. 25%
B. 50%
C. 75%
D. 25%

30.How many rounds of replication in BrdU will be needed to visualize Harlequin chromosome?
A. One
B. Two
C. Three
D. One


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