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Question : What bacteria are used to make butanol and acetone from starch?
A. Lactobacillus bulgaricus
B. Clostridium acetobutylicum
C. Streptococcus thermophilus
D. Both (a) and (c)
Question : Based on the product they produce, which of the following is correctly matched?
A. Methanobacterium : Lactic acid
B. Penicillium notatum : Acetic acid
C. Saccharomyces cerevisiae : Ethanol
D. Acetobacter aceti : Antibiotics
Question : It was mainly due to the efforts of who in India that biogas production technology was developed?
A. Indian Agricultural/ Research Institute (IARI) and Khadi and Village Industries Commission (KVIC)
B. National Botanical Research Institute (NBR1)
C. Indian Council of Medical Research (ICMR)
D. Indian Council of Agricultural Research (ICAR)
Question : What bacterial group is exploited in the production of biogas?
A. Methogens
B. Methanotrophs
C. Organotrophs
D. Eubacteria
Question : Anaerobic sludge digesters produce what gases?
A. Methane and CO2 only
B. Methane, Hydrogen Sulphide and CO2
C. Methane, Hydrogen Sulphide and O2
D. Hydrogen Sulphide and CO2
Question : The most abundant prokaryotes useful to humans for making curd from milk and producing antibiotics are categorised as?
A. Cyanobacteria
B. Archaebacteria
C. Chemosynthetic autotrophs
D. Heterotrophic bacteria
Question : What vitamin increases in content as milk is converted into curd by lactic acid bacteria?
A. vitamin-C
B. Vitamin-D
C. vitamin-B12
D. vitamin-E
Question : In our country, besides dung, which weed is recommended for extensive use in biogas production?
A. Mangifera indica
B. Hydrilla
C. Eicchomia crassipes
D. Solanum
Question : What is normally given to a patient with myocardial infarction when they arrive at the hospital?
A. Penicillin
B. Streptokinase
C. Cyclosporin-A
D. Statins
Question : Citric acid is produced in industries by which of the following microorganisms?
A. Lactobacillus bulgaricus
B. Penicillium citrinum
C. Aspergillus niger
D. Rhizopus nigricans
Question : What makes the big holes in Swiss cheese?
A. a machine
B. a bacterium that produces methane gas
C. a bacterium producing a large amount of carbon dioxide
D. a fungus that releases a lot of gases during its metabolic activities
Question : Pyrethrin is a common ingredient of what?
A. Mosquito coils
B. Fly sprays
C. Mosquito mats
D. All of these
Question : Which of the following is a common biocontrol agent for the control of plant diseases?
A. Baculovirus
B. Bacillus thuringiensis
C. Glomus
D. Trichoderma
Question : Alcohol is produced by using which of the following?
A. Bacteria
B. Water moulds
C. Yeasts
D. Slime moulds
Question : Which of the following statements is true about BOD?
A. The greater the BOD of wastewater, the more is its polluting potential
B. The greater the BOD of wastewater, the less is its polluting potential
C. The lesser the BOD of wastewater, the more is its polluting potential
D. The lesser the BOD of wastewater, the less is its polluting potential