Depletion of ozone layer in the outer atmosphere may cause

Related MCQs

• Disinfection of water with ozone is not good because
• The gas which may cause explosion in sewers, is
• Pathogens (or pathogenic bacteria’s) in water may cause
• The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known
• The grit and silt of the grit chambers, may not be used for
• For detecting the nitrates in sewage, the colour may be developed by adding
• Setting out the alignments of sewers may start from
• The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be
• For large sewers, maximum distance between manholes may be
• A pressure conduit laid underground, may not be subjected to