Q.1
Which of the following is not true about a gate valve?
  • a) It offers more resistance to the flow of water than the globe valve
  • b) It is preferred over globe valve where the resistance to the water flow is to be kept at the minimum
  • c) It controls the flow of water equally well from either direction
  • d) It offers less resistance to the flow of water than the globe valve
Q.2
Which of the following materials is not used to make storage tanks?
  • a) Mild steel pressed plates
  • b) Soda ash
  • c) Reinforced concrete
  • d) Stone or brick masonry
Q.3
Which of the following components of a storage tank is used to clean the tank periodically?
  • a) Outlet pipe
  • b) Ball valve
  • c) Scour pipe
  • d) Inlet pipe
Q.4
According to the Indian Standard code recommendations, the flushing storage capacity for factories and workshops is __________ litres per urinal seat and ______ litres per W.C. seat.
  • a) 180, 900
  • b) 180, 270
  • c) 900, 180
  • d) 270, 180
Q.5
In a house drainage system, the pipe through which human excreta flows is called __________
  • a) Vent pipe
  • b) Soil pipe
  • c) Rainwater pipe
  • d) Waste pipe
Q.6
In a house drainage system, the pipe which is used to preserve the water seal of traps is called __________
  • a) Waste pipe
  • b) Rainwater pipe
  • c) Vent pipe
  • d) Anti-siphonage pipe
Q.7
The strength or effectiveness of a water seal is represented by its _________
  • a) Mass
  • b) Depth
  • c) Volume
  • d) Thickness
Q.8
Which of the following is not a characteristic of traps?
  • a) A trap should be simple in construction
  • b) It should be cheap and readily available
  • c) A trap should be self-cleansing
  • d) A trap should be of an absorbent material
Q.9
Which of the following traps is commonly known as nahni trap?
  • a) Floor trap
  • b) Gully trap
  • c) Silt trap
  • d) Grease trap
Q.10
The opening at the top of the intercepting trap is called as ___________
  • a) Greasy eye
  • b) Cleaning eye
  • c) Gully arm
  • d) Gully eye
0 h : 0 m : 1 s