Q. No.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
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
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
Which of the following statements about mycorrhizae is false?
| I. | In ectomycorrhizae, association between the fungus and plant is less intimate than in endomycorrhizae |
| II. | The mycorrhizal association of fungus and the plant may have had importance in the evolution of land plant |
| III. | The mycorrhizal association is a mutualistic symbiosis |
| IV. | Fungal partner is associated with the only roots of the higher plants (like angiosperms) |
| V. | Only advanced modern plants such as angiosperms possess mycorrhizae |
1. Only V
2. Only IV
3. Only I and III
4. Only II and V
Which of the following enzymes is not used in making detergent?
(1) Peptidase
(2) Cellulase
(3) Amylase
(4) Lipase
Consider the following statements (A-D) about organic farming:
(A) Utilizes genetically modified crops like Bt cotton
(B) Uses only naturally produced inputs like compost
(C) Does not use pesticides and urea
(D) Produces vegetables rich in vitamins and minerals
Which of the above statements are correct?
(1) B, C and D
(2) C and D only
(3) B and C only
(4) A and B only
Which one of the following is not a biofertilizer?
(1) Mycorrhiza
(2) Agrobacterium
(3) Rhizobium
(4) Nostoc
Which of the followings is mainly produced by the activity of anaerobic bacteria on sewage?
(1) Marsh gas
(2) Laughing gas
(3) Propane
(4) Mustard gas
Ethanol is commercially produced through a particular species of:
(1) Aspergillus
(2) Saccharomyces
(3) Clostridium
(4) Trichoderma
Antibiotics are used to treat diseases like:
(1) Plague
(2) Whooping cough, Diphtheria
(3) Leprosy
(4) All are correct
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