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69.

70.

71.

72.

73.

74.

75.

Which of the following is the advantage of employing microbial biosensors for
environmental monitoring ?

A) Real-time monitoring B) Wide range of analyte detection

C) High sensitivity D) All of the above

Which of the following bioreactor designs offer improved oxygen supply for efficient
waste treatment ?

A) Membrane bioreactor B) Trickle bed bioreactor

C) Plug flow bioreactor D) Packed bed bioreactor

Milk serves as an excellent substrate for the growth of microorganisms. In the table
given below,Column | shows names of different microorganisms that grow on milk
and Column II shows their descriptions. Select the correct combination.

Column! Column Il

Staphylococcus epidermidis la | Present in freshly drawn milk

| Acinetobacter johnsoni |© | Causes a viscous slime to form in milk
3 | Escherichia coli Causes a faecal flavour on milk
[4 [Pseudomonas species [6
Streptococcus lactis |© | Causes milk to sour
A) 1-a,2-b,3-c,4-d,5-e B) 1-a,2-c,3-b,4-d,5-e
C) 1-b,2-a,3-c,4-e,5-d D) 1-c,2-a,3-b,4-e,5-d

Which of the following microorganisms is responsible for spoilage of canned food as they
can withstand the canning process and cause bulging of the cans and food spoilage ?
A) Clostridium perfringens B) Lactobacillus acidophilus

C) Pseudomonas aeruginosa D) Bacillus stearothermophilus

Which of the following is not a hard cheese ?
A) Camembert B) Gruyere C) Parmesan D) Romano

Which of the following is the active antimicrobial ingredient in bleaching powder ?
A) Bromide B) Hydrochloride § C) Hypochlorite D) Phenol

Which of the following is achieved through pasteurization of milk ?
A) It kills all microbes that is present in milk

B) It sterilizes milk

C) It kills all bacterial spores

D) It kills microbial pathogens that might be present in milk

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