Following is the sewage treatment. In which of the following options, correct word for all the four numbers (1, 2, 3 and 4) are indicated:
(1) 1 - Large aeration tanks; 2 - Chemically agitation; 3 - High; 4 - Anaerobic
(2) 1 - Large aeration tanks; 2 - Mechanically agitation; 3 - Low; 4 - Anaerobic
(3) 1 - Large aeration tanks; 2 - Mechanically agitation; 3 - Low; 4 - Aerobic
(4) 1 - Large aeration tanks; 2 - Mechanically agitation; 3 - High; 4 - Anaerobic
Following is the curd formation from milk. In which of the following options, correct word for all the two numbers (1 and 2) are indicated:
(1) 1 - Lactic acid; 2 - Increased vitamin B1
(2) 1 - Lactic acid; 2 - Increased vitamin B2
(3) 1 - Lactic acid; 2 - Increased vitamin B12
(4) 1 - Lactic acid; 2 - Increased vitamin C
Which of the following statements is correct?
A. Single cell protein is rich in high quality proteins but poor in fat.
B. BOD is the amount of oxygen that would be consumed if all the inorganic matter in one litre of water were oxidized by bacteria.
C. Trichoderma sp are free living fungi that are effective biocontrol agents of several pathogens.
D. Baculoviruses are pathogens that attack insects and other arthropods.
E. Bacillus thuringiensis is first used biopesticide.
F. Lactase enzyme is used in alcoholic fermentation.
G. Mycorrhiza is a symbiotic association between fungi e.g. Glomus and vascular plant.
(1) B, C, F, G
(2) A, D, F
(3) A, C, D, E, G
(4) B, F
Benefits of mycorrhizae are:
A. Resistance to root-borne pathogens
B. Tolerance to salinity and absorption of phosphorus
C. Tolerance to drought
D. Overall increase in the plant growth and development.
(1) Only A, B
(2) Only B, C
(3) Only C, D
(4) A, B, C, D
In cheese manufacture, the micro-organisms are used for:
(1) The souring of milk only
(2) The ripening only
(3) Development of resistance to spoilage
(4) Both (1) and (2)
Which one(s) is/are correct about Cyclosporin A?
(1) It is produced by the fungus Trichoderma polysporum
(2) It is used as an immuno-suppressive agent during organ transplantation
(3) It is produced by a type of yeast, Monascus purpureus
(4) Both (1) and (2)
Antibiotics are used to treat diseases like:
(1) Plague
(2) Whooping cough, Diphtheria
(3) Leprosy
(4) All are correct
Match the Column-I with Column-II:
|
|
Column-I |
|
Column-II |
|
A. |
The stage in which physical treatment of sewage is done. |
I. |
Anaerobic digestion of activated sludge and production of biogas |
|
B. |
The stage in which biological treatment of sewage is done. |
II. |
Activated sludge |
|
C. |
The names of sediment and supernatant in primary treatment. |
III. |
Aeration tanks |
|
D. |
_______ is carried to aeration tanks from primary settling. |
IV. |
Primary effluent |
|
E. |
Site of flocs growth. |
V. |
Primary sludge, effluent |
|
F. |
Name of the sediment of secondary settling. |
VI. |
Secondary treatment |
|
G. |
The function of sludge digester. |
VII. |
Primary treatment |
(1) I - G, II - F, III - E, IV - D, V - C, VI - B, VII - A
(2) I - A, II - C, III - E, IV - G, V - B, VI - D, VII - F
(3) I - A, II - B, III - C, IV - D, V - E, VI - F, VII - G
(4) I - G, II - F, III - A, IV - B, V - C, VI - D, VII - E
Enzyme which has the fibrinolytic effect is:
(1) Protease
(2) Amylase
(3) Lipase
(4) Streptokinase
The advantage the fungi derive from mycorrhizal association with plants:
(1) Shelter + Nutrients
(2) Water from soil
(3) Minerals from soil
(4) Tolerance to salinity
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