Basic Industrial and Environmental BioTechnology Mid - II, November - 2014

1.Biofertilisers are used for
  • Increased crop productivity
  • replace chemical fertilizers
  • Prevent damage by chemical fertilizers
  • all of the above
Answer: D
2.In ------------- bioremediation polluted zone is subjected to restoration
  • in-situ
  • ex-situ
  • in vitro
  • in vivo
Answer: A
3.During bioremediation microorganism may use contaminant as
  • Nutrient
  • energy source
  • both a and b
  • oxygen source
Answer: C
4.In ---------------------- stage of biogas formation acetate, H2 & CO2 are converted to methane
  • hydrolysis
  • digestion
  • acidogenesis
  • methanogenesis
Answer: D
5.Enzymes used in conversion of hydrogen ions into hydrogen gas are
  • hydrogenase
  • nitrogenase
  • both a and b
  • oxygenase
Answer: C
6.Coagulants or flocculants are added during ------------------- treatment of sewage treatment
  • primary
  • secondary
  • tertiary
  • final
Answer: A
7.In lagoons, oxidation of putrescible matter occurs through symbiotic action of -----------
  • algae & aerobic bacteria
  • fungi & aerobic bacteria
  • algae & fungi
  • aerobic and anaerobic bacteria
Answer: A
8.COD (chemical oxygen demand) is determined by oxidation of waste with boiling
  • nitric acid
  • sulphuric acid
  • acid dichromate
  • hydro chloric acid
Answer: C
9.In final treatment by satisfactory chlorination can kill up to ------------ of original bacteria
  • 80%
  • 90%
  • 99%
  • 100%
Answer: C
10.EPA stands for _____________________
  • environmental protection agency
  • eco protection authority
  • environmental prevention agency
  • environmental pollution agency
Answer: A
11.An example of biofertilizers pteridophyte ___________ in symbiotic association with anabaena.
Answer: Azolla
12._______________ are symbiotic association of fungi with roots of plants.
Answer: Mycorrhiza
13.An example of a bacterium developed successfully as a commercial insecticide ------------------
Answer: Bacillus thuringiensis
14.3 Rs concept in modern waste management stands for -----------------------
Answer: Reduce, reuse, recycle
15.The amount of oxygen required micro organisms to biodegrade organic matter in waste water is called __________________________
Answer: BOD biological oxygen demand
16.MLVSS full form is ____________________
Answer: Mixed liquor volatile suspended solids
17.The thin layer of microorganism formed around the rocks in tricking filters is called as ----------------
Answer: Zoogleal film /biofim/microbial film
18.An example of nitrogen fixing bacteria is _____________ in legumes
Answer: Rhizobium
19.Plastis on burning produce ____________
Answer: Dioxins
20.Sewage is conveyed through pipes known as ____________
Answer: Sewers