Microorganisms are used during which stage of the purification of the sewage water?
(1) Primary treatment
(2) Secondary treatment
(3) Tertiary treatment
(4) Both (1) and (2)
Difficulty Level:
Big holes in Swiss cheese are made by a:
(1) a machine
(2) a bacterium that produces methane gas
(3) a bacterium producing a large amount of carbon dioxide
(4) a fungus that releases a lot of gases during its metabolic activites.
Difficulty Level:
Match the items in column 'A' and Column 'B' and choose correct answer.
|
Column A |
|
Column B |
|
|
(i) |
Lady Bird |
(a) |
Menthano bacterium |
|
(ii) |
Mycorrhiza |
(b) |
Trichoderma |
|
(iii) |
Biological control |
(c) |
Aphids |
|
(iv) |
Biogas |
(d) |
Glomus |
The correct answer is:
(1) (i) - b, (ii) - d, (iii) - c, (iv) - a
(2) (i) - c, (ii) - d, (iii) - b, (iv) - a
(3) (i) - d, (ii) - a, (iii) - b, (iv) - c
(4) (i) - c, (ii) - b, (iii) - a, (iv) - d
Difficulty Level:
Match the following list of bioactive substances and their roles:
|
|
Bioactive substance |
|
Role |
|
(i) |
Statin |
(a) |
Removal of oil stains |
|
(ii) |
Cyclosporin |
(b) |
Removal of clots from blood vessels |
|
(iii) |
Streptokinase |
(c) |
Lowering of blood cholesterol |
|
(iv) |
Lipase |
(d) |
Immuno-suppressive agent |
Choose the correct match:
(1) (i) - b, (ii) - c, (iii) - a, (iv) - d
(2) (i) - d, (ii) - b, (iii) - a, (iv) - c
(3) (i) - d, (ii) - a, (iii) - d, (iv) - c
(4) (i) - c, (ii) - d, (iii) - b, (iv) - a
Difficulty Level:
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:
(1) Vitamin C
(2) Vitamin D
(3) Vitamin B12
(4) Vitamin E
Difficulty Level:
Which one of the following alcoholic drinks is produced without distillation?
(1) Wine
(2) Whisky
(3) Rum
(4) Brandy
Difficulty Level:
Match the following list of bacteria and their commercially important products:
|
|
Bacterium |
|
Product |
|
(i) |
Aspergullus niger |
(a) |
Lactic acid |
|
(ii) |
Acetobacter aceti |
(b) |
Butyric acid |
|
(iii) |
Clostridium Butylicum |
(c) |
Acetic acid |
|
(iv) |
Lactobacillus |
(d) |
Citric Acid |
Choose the correct match:
(1) (i) - b, (ii) - c, (iii) - d, (iv) - a
(2) (i) - b, (ii) - d, (iii) - c, (iv) - a
(3) (i) - d, (ii) - c, (iii) - b, (iv) - a
(4) (i) - d, (ii) - a, (iii) - c, (iv) - b
Difficulty Level:
The residue left after methane production from cattle dung is:
(1) burnt
(2) burried in land fills
(3) used as manure
(3) used in civil construction
Difficulty Level:
BOD of waste water is estimated by measuring the amount of:
(1) total inorganic matter
(2) biodegradable organic matter
(3) oxygen evolution
(4) oxygen consumption.
Difficulty Level:
The free-living fungus Trichoderma can be used for:
(1) killing insects
(2) biological control of plant diseases
(3) controlling butterfly caterpillars
(4) producing antibiotics
Difficulty Level: