If the flame of a miner's safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains

Related MCQs

• If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
• Lead acetate test in sewer manhole is done to test the presence of
• The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be
• A manhole is generally provided at each
• A manhole is classified as shallow if its depth is between
• For efficient working of a sewer, it must be ensured that
• The sewer pipes
• To prevent settling down of sewage both at the bottom and on the sides of a large sewer, selfcleaning velocity recommended for Indian conditions, is
• If the depth of flow in a circular sewer is 1/4th of its diameter D, the wetted perimeter is
• The sewer which received discharge from two or more main sewers, is known as