Home > Civil Engineering > Environmental Engineering

Environmental Engineering - Interview Questions and Answers

Prepare for your technical interview with these Environmental Engineering questions.

Ready to test your skills?

Take a timed mock test specifically for Environmental Engineering.

Start Mock Test
81. Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters. Reason R : The sand used in slow sand filters is finer than that in rapid sand filters. Select your answer based on the coding system given below:
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is not the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
Explanation:
82. The length of rectangular sedimentation tank should not be more than
A. B
B. 2B
C. 4B
D. 8B
Explanation:
83. The amount of residual chlorine left in public water supply for safety against pathogenic bacteria is about
A. 0.01 to 0.05 ppm
B. 0.05 to 0.5 ppm
C. 0.5 to 1.0 ppm
D. 1.0 to 5.0 ppm
Explanation:
84. The rate of filtration in slow sand filters in million litres per day per hectare is about
A. 50 to 60
B. 100 to 150
C. 500 to 600
D. 1400 to 1500
Explanation:
85. The overflow rate for plain sedimentation tanks is about
A. 500 to 750 litres/hour/ m2
B. 1000 to 1250 litres/hour/ m2
C. 1250 to 1500 litres/hour/m2
D. 1500 to 2000 litres/hour/m2
Explanation:
« Prev1234567891011121314151617181920212223242526272829Next »