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MCQs

Total Questions : 918 | Page 92 of 92 pages
Question 911. The length of rectangular sedimentation tank should not be more than(Where ‘B’ is the width of the tank)
  1.    2B
  2.    B
  3.    4B
  4.    8B
 Discuss Question
Answer: Option C. -> 4B
Question 912. Septic tank is a(i) Settling tank(ii) Digestion tank(iii) Aeration tank
  1.    (i) and (ii)
  2.    Only (iii)
  3.    Only (i)
  4.    (i) and (iii)
 Discuss Question
Answer: Option A. -> (i) and (ii)
Question 913. If the coli form bacteria is present in a sample of water, then the coli-form test to be conducted is(i) Presumptive coli-form test(ii) Confirmed coli-form test(iii) Completed coli-form test
  1.    All (i), (ii) and (iii)
  2.    Both (i) and (iii)
  3.    Only (i)
  4.    Both (i) and (ii)
 Discuss Question
Answer: Option A. -> All (i), (ii) and (iii)
Question 914. Cleaning is done by(i) Scraping and removal in filters slow sand(ii) Back washing in slow sand filters(iii) Scraping and removal in filters rapid sand(iv) Back washing in rapid sand filtersThe correct answer is
  1.    (i) and (iv)
  2.    (i) and (ii)
  3.    (ii) and (iv)
  4.    (ii) and (iii)
 Discuss Question
Answer: Option A. -> (i) and (iv)
Question 915. The amount of coagulant needed for coagulation of water increases with(i) Increase in turbidity of water(ii) Decrease in turbidity of water(iii) Increase in temperature of water(iv) Decrease in temperature of waterThe correct answer is
  1.    (i)and(iv)
  2.    (ii) and (iii)
  3.    (i) and (ii)
  4.    (ii) and (iv)
 Discuss Question
Answer: Option A. -> (i)and(iv)
Question 916. The disinfection efficiency of chlorine increases by(i) Decreasing the time of contact(ii) Decreasing the temperature of water(iii) Increasing the temperature of water
  1.    Only (iii)
  2.    Only (i)
  3.    Both (i) and (iii)
  4.    Both (i) and (ii)
 Discuss Question
Answer: Option A. -> Only (iii)
Question 917. Hardy cross method of analysis of distribution system(i) Involves successive trials(ii) Takes economic aspects into account(iii) Is time consuming
  1.    (i) and (ii)
  2.    Only (i)
  3.    All are correct
  4.    (i) and (iii)
 Discuss Question
Answer: Option D. -> (i) and (iii)
Question 918. The per capital consumption of a locality is affected by(i) Climatic conditions(ii) Quality of water(iii) Distribution pressure
  1.    All (i), (ii) and (iii)
  2.    Both (i) and (iii)
  3.    Both (i) and (ii)
  4.    Only (i)
 Discuss Question
Answer: Option A. -> All (i), (ii) and (iii)

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