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Browse complete papersWhich device measures velocity head in open channels or pressurised pipelines?
Pitot tube
Orifice meter
Venturimeter
Ultrasonic flowmeter
Correct answer
Pitot tube
Which of the following is NOT a part of domestic water demand?
Bathing
Road washing
Gardening
Washing clothes
Correct answer
Bathing
The material commonly used for pressurised sewer pipes is:
clay
RCC
stoneware
PVC or ductile iron
Correct answer
clay
Which of the following materials is the most suitable for large diameter sewer mains?
Cast iron
Stoneware
RCC
HDPE
Correct answer
Cast iron
The main purpose of providing a minimum gradient in sewer lines is to:
ensure self-cleansing velocity
reduce pipe cost
avoid backflow
increase manhole count
Correct answer
ensure self-cleansing velocity
Sludge drying beds are the most effective in:
dry and hot climates
high rainfall areas
cold and humid places
coastal regions
Correct answer
dry and hot climates
Lack of ventilation in buildings may lead to the accumulation of:
harmful indoor pollutants
oxygen
water vapour
air pressure
Correct answer
harmful indoor pollutants
Which of the following natural processes is responsible for dilution and removal of air pollutants?
Photochemical smog formation
Chemical precipitation
Thermal stratification
Wind dispersion and rain washing
Correct answer
Photochemical smog formation
Which of the following is a step in the recycling process of e-waste?
Dismantling devices manually to recover valuable materials
Storing e-waste in landfills for long periods
Incinerating all e-waste
Ignoring hazardous substances during recycling
Correct answer
Dismantling devices manually to recover valuable materials
The primary source of municipal solid waste is:
household waste
industrial waste
agricultural waste
hazardous waste
Correct answer
household waste