Water Quality
Ground and Surface
Solved Example: 9140-10
Which of the following method is used to forecast the population of old and very large city? (SSC JE CE Paper II Jan 2018 Morning)
A. Arithmetical increase method
B. Geometric progression method
C. Graphical method
D. Logistic curve method
Correct Answer: A
Basic Water Chemistry
Solved Example: 9138-01
Blue baby disease found in infants is due to excessive ________ in drinking water. (SSC JE CE Paper VI Sep 2019 Morning)
A. Colour
B. Sulphates
C. Carbonates
D. Nitrates
Correct Answer: D
Solved Example: 9138-02
Which one of the following is the most important parameter for the removal of discrete particles in the design of continuous flow rectangular sedimentation tank? (SSC JE CE Paper I Jan 2018 Morning)
A. Depth of tank
B. Length of tank
C. Surface overflow rate
D. Temperature of water to be treated
Correct Answer: C
Solved Example: 9138-03
A 25 ml sample was diluted to 250 ml with odourless distilled water so that the odour of the sample no longer perceivable. What was the Threshold odour number? (MPPSC AE CE 2014 Paper II)
A. 11
B. 10
C. 25
D. 5
Correct Answer: B