1942
Q1
Allen
1. (Conceptual Questions)
MCQ
Which one of the following is not true about antibiotics?
A.
First antibiotic was discovered by Alexander Fleming
B.
The term 'antibiotic' was coined by S. Waksman in 1942.
C.
Some persons can be allergic to a particular antibiotic
D.
Each antibiotic is effective only against one particular kind of germ.
Q2
Allen
1. (Conceptual Questions)
MCQ
Which one of the microorganism is used for production of citric acid in industries?
A.
Lactobacillus bulgaricus
B.
Penicillium citrinum
C.
Aspergillus niger
D.
Rhizopus nigricans
Q3
Allen
1. (Conceptual Questions)
MCQ
Formation of vinegar from alcohol is caused by :-
A.
Bacillus subtilis
B.
Clostridium
C.
Acetobacter aceti
D.
Azotobacter BMH003
Q4
Allen
1. (Conceptual Questions)
MCQ
Biogas consists of:-
A.
Carbon monoxide, methane and hydrogen
B.
Carbon dioxide, methane and hydrogen
C.
Carbon monoxide, ethane and hydrogen
D.
Carbon dioxide, ethane and hydrogen
Q5
Allen
1. (Conceptual Questions)
MCQ
Biogas is produced by anaerobic breakdown of biomass of agricultural waste by methanogenic bacteria. It is a:-
A.
One step process
B.
Two step process
C.
Three step process
D.
Multistep process
Q6
Allen
1. (Conceptual Questions)
MCQ
Beer is obtained from :-
A.
Molasses
B.
Grapes
C.
Barley
D.
Rye
Q7
Allen
1. (Conceptual Questions)
MCQ
Maximum percentage of alcohol present in the product of yeast fermentation :-
A.
Brandy
B.
Gin
C.
Rum
D.
Wine
Q8
Allen
1. (Conceptual Questions)
MCQ
Which of the following microorganisms use for swiss cheese?
A.
Propionibacterium
B.
Geotrichum
C.
Penicillium
D.
Streptococcus
Q9
Allen
1. (Conceptual Questions)
MCQ
Rate limiting material in biogas production is:
A.
Methane
B.
Cellulose
C.
Starch
D.
Acetic acid
Q10
Allen
1. (Conceptual Questions)
MCQ
Which group is not related with petro-
plantation?
A.
Euphorbiaceae
B.
Asclepiadaceae
C.
Apocyanaceae
D.
Leguminosae
Q11
Allen
1. (Conceptual Questions)
MCQ
What are the advantage of gobar gas over conventional utilization :-
A.
More efficient source of energy
B.
Used as good fertilizer
C.
Reduces the chances of spreading of pathogens
D.
All the above
Q12
Allen
1. (Conceptual Questions)
MCQ
Milk is changed into curd by :ā
A.
Bacillus megatherium
B.
Acetobacter aceti
C.
Xanthomonas citri
D.
Lactobacillus acidophilus
Q13
Allen
1. (Conceptual Questions)
MCQ
Saccharomyces cerevisiae is used in the formation of :-
A.
Ethanol
B.
Methanol
C.
Acetic acid
D.
Antibiotics
Q14
Allen
1. (Conceptual Questions)
MCQ
Modern farmers can increase the yield of Paddy upto 50% by the use of :-
A.
Cyanobacteria
B.
Rhizobium
C.
Mycorrhiza
D.
Farm yard manure
Q15
Allen
1. (Conceptual Questions)
MCQ
Which one produces gas by decomposing the gobar (Dung) in gobar gas:-
A.
Fungus
B.
Virus
C.
Methanogenic bacteria
D.
Algae
Q16
Allen
1. (Conceptual Questions)
MCQ
Which of the following is used to manufacture ethanol from starch?
A.
Penicillin
B.
Saccharomyces
C.
Azotobacter
D.
Lactobacillus
Q17
Allen
1. (Conceptual Questions)
MCQ
Which of the following is the pair of biofertilizers associated with each other?
A.
Azolla and BGA
B.
Nostoc and legume
C.
Rhizobium and grasses
D.
Salmonella & E. coli
Q18
Allen
1. (Conceptual Questions)
MCQ
Which bacteria is utilized in Gobar gas plant?
A.
Methanogens
B.
Nitrifying bacteria
C.
Ammonifying bacteria
D.
Denitrifying bacteria
Q19
Allen
1. (Conceptual Questions)
MCQ
During the formation of bread it becomes porous due to release of $CO_{2}$ by the action of:
A.
Yeast
B.
Bacteria
C.
Virus
D.
Protozoans
Q20
Allen
1. (Conceptual Questions)
MCQ
During anaerobic digestion of organic waste, such as in producing biogas, which one of the following is left undegraded?
A.
Lipids
B.
Lignin
C.
Hemi-cellulose
D.
Cellulose
Q21
Allen
1. (Conceptual Questions)
MCQ
The term "antibiotic" was coined by :-
A.
Edward Jenner
B.
Louis Pasteur
C.
Selman Waksman
D.
Alexander Fleming
Q22
Allen
1. (Conceptual Questions)
MCQ
A free-living nitrogen-fixing cyanobacterium which can also form symbiotic association with the water fern Azolla is?
A.
Anabaena
B.
Tolypothrix
C.
Chlorella
D.
Rhizobium BMH022
Q23
Allen
1. (Conceptual Questions)
MCQ
The technology of biogas production was developed in India mainly due to the efforts of:
A.
IARI
B.
KVIC
C.
Both (1) and (2)
D.
WHO
Q24
Allen
1. (Conceptual Questions)
MCQ
Biogas produced by anaerobic fermentation of waste biomass consists of :-
A.
methane
B.
traces of $\mathrm{H}_{2}, \mathrm{H}_{2} \mathrm{~S}$ and $\mathrm{N}_{2}$
C.
$\mathrm{CO}_{2}$
D.
all of these
Q25
Allen
1. (Conceptual Questions)
MCQ
Which one of the following is used in making of bread?
A.
Rhizopus stolonifer
B.
Saccharomyces cerevisiae
C.
Zygosaccharomyces
D.
Saccharomyces ludwigi