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MCQs

Total Questions : 46 | Page 2 of 5 pages
Question 11. Which of the following can affect the microbial population?
  1.    Green algae
  2.    Kitchen waste
  3.    Heavy metals
  4.    Oxygen
 Discuss Question
Answer: Option C. -> Heavy metals
Answer: (c).Heavy metals
Question 12. Which of the following soil pollution is not responsible for reduction in bacteria?
  1.    Copper
  2.    Cadmium
  3.    Zinc
  4.    Glass
 Discuss Question
Answer: Option D. -> Glass
Answer: (d).Glass
Question 13. Tolerant microbes can grow better in metal stress.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 14. Which of the following terms is not relevant to affecting microbial population?
  1.    Reduction in abundance
  2.    Diversity of species
  3.    Color of species
  4.    Resistant population
 Discuss Question
Answer: Option C. -> Color of species
Answer: (c).Color of species
Question 15. Which of the following population cannot be affected by heavy metals?
  1.    Cyanobacteria
  2.    Algae
  3.    Protozoan
  4.    Phytoremediation
 Discuss Question
Answer: Option D. -> Phytoremediation
Answer: (d).Phytoremediation
Question 16. Which of the following is not considered toxic metals?
  1.    Zinc
  2.    Copper
  3.    Uranium
  4.    H₂O
 Discuss Question
Answer: Option D. -> H₂O
Answer: (d).H₂O
Question 17. Which of the following can stimulate chemolithotrophic growth in bacteria?
  1.    Uranium
  2.    Nickle
  3.    Copper
  4.    Cadmium
 Discuss Question
Answer: Option B. -> Nickle
Answer: (b).Nickle
Question 18. Which of the following trace elements are not found in Escherichia coli?
  1.    Copper
  2.    Zinc
  3.    Manganese
  4.    Phytoremediation
 Discuss Question
Answer: Option D. -> Phytoremediation
Answer: (d).Phytoremediation
Question 19. What happens after death of the bacteria that has metal accumulation?
  1.    Metal species released
  2.    Metal species degraded
  3.    Free metal species released
  4.    Free metal species dissolves
 Discuss Question
Answer: Option A. -> Metal species released
Answer: (a).Metal species released
Question 20. A large number of bacteria can accumulate which metal?
  1.    Cadmium
  2.    Water
  3.    Carbon dioxide
  4.    Fungus
 Discuss Question
Answer: Option A. -> Cadmium
Answer: (a).Cadmium

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