Related Questions

If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
A Hydrogen sulphide
B Carbon dioxide
C Methane
D Oxygen
A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?
A 2
B 4
C 6
D 5
In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept
A 10.0
B 5.0
C 2.0
D 0.25
Sewer pipes need be checked for
A Minimum flow
B Maximum flow
C Both A and B
D None of these
The porosity of sediments in sewer pipes, is usually taken as
A 0.010
B 0.011
C 0.012
D 0.013
Sewer pipes are made of
A Earthen ware
B Stone ware
C Refractory clay
D All the above
The sewer pipes
A Carry sewage as gravity conduits
B Are designed for generating self-cleansing velocities at different discharge
C Should resist the wear and tear caused due to abrasion
D All the above
Babul attended five tests during the semester and the average of his test scores was 87. If has average score after first three tests were 85, what was the average of his 4th and 5th test?
A 88
B 89
C 90
D 93
Jamal's average score in 4 tests was 80 out of a possible 100 . If his scores in 2 of the tests were 65 and 70, what is the lowest that either of his other scores could have been ?
A 70
B 80
C 90
D 85
Rashed's average on 4 tests is 80. Assuming he can earn no more than 100 on any test, what is the least he can earn on his 5th test and still have a chance for an average of 85 after seven tests ?
A 60
B 70
C 75
D 85

Next steps