Civil Engineering - GATE Exam Questions - Discussion
Discussion Forum : GATE Exam Questions - Section 3 (Q.No. 37)
37.
A waste water sample diluted to 100 times with aeration water had an initial dissolved oxygen (DO) of 7.0 mg/l and after 5 days of incubation at 20°C, the DO was zero. The BOD of waste water is :
Discussion:
11 comments Page 2 of 2.
Shubham said:
9 years ago
Correct answer is c.
We can't determine because we don't know that at which time D. O became zero. It may be become zoro before 5 days.
We can't determine because we don't know that at which time D. O became zero. It may be become zoro before 5 days.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers