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MCQs

Total Questions : 104 | Page 1 of 11 pages
Question 1. One degree of hardness is equivalent to ___ ppm.
  1.    2
  2.    1
  3.    10
  4.    100
 Discuss Question
Answer: Option B. -> 1
Answer: (b).1
Question 2. In which method of determining total hardness of water is based on the premise that hardness producing substance react with soap and form insoluble compounds before lather is produced?
  1.    Clark’s method
  2.    Hehner’s method
  3.    Versenate method
  4.    EDTA method
 Discuss Question
Answer: Option A. -> Clark’s method
Answer: (a).Clark’s method
Question 3. The permissible limit of pH preferred for potable water is ___ ppm.
  1.    6.5-9
  2.    7-8.5
  3.    10-14
  4.    0-7
 Discuss Question
Answer: Option A. -> 6.5-9
Answer: (a).6.5-9
Question 4. What is the concentration of H⁺ ions in moles/L in water if the pOH value is 6?
  1.    10⁻⁶
  2.    10⁻⁷
  3.    10⁻⁸
  4.    10⁻⁹
 Discuss Question
Answer: Option C. -> 10⁻⁸
Answer: (c).10⁻⁸
Question 5. What is the indicator used in EDTA method?
  1.    Potassium chromate
  2.    Potassium dichromate
  3.    Potassium chloride
  4.    Erio chrome, black T
 Discuss Question
Answer: Option D. -> Erio chrome, black T
Answer: (d).Erio chrome, black T
Question 6. Gelatin liquefying bacteria are helpful in the manufacturing of photographic films.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 7. In 2000, how many dams where there in the world?
  1.    45000
  2.    46000
  3.    55
  4.    None of the above
 Discuss Question
Answer: Option A. -> 45000
Answer: (a).45000
Question 8. In which countries farming is still the main activity of growing food?
  1.    Africa
  2.    Asia
  3.    Both a and b
  4.    Europe
 Discuss Question
Answer: Option C. -> Both a and b
Answer: (c).Both a and b
Question 9. Which continent has the highest use of agricultural water?
  1.    Africa
  2.    America
  3.    Europe
  4.    Asia
 Discuss Question
Answer: Option A. -> Africa
Answer: (a).Africa
Question 10. What is industrial sector of water?
  1.    Houses
  2.    Factories and Power
  3.    industry
  4.    Agricultural
 Discuss Question
Answer: Option B. -> Factories and Power
Answer: (b).Factories and Power

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