- (A) More than 7
- (B) Less than 7
- (C) Less than 6
- (D) More than 6
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- (A) 25 %
- (B) 50 %
- (C) 10 %
- (D) 5 %
- (A) Initial demand
- (B) First stage demand
- (C) Carbonaceous demand
- (D) All of these
- (A) 1.250 D
- (B) 1.350 D
- (C) 1.425 D
- (D) 1.625 D
- (A) A jar
- (B) A breaker
- (C) A test tube
- (D) An Imhoff cone
- (A) 65 to 70%
- (B) 70 to 75%
- (C) 75 to 80%
- (D) 85%
- (A) Lower end of ventilating column
- (B) Upper end of ventilating column
- (C) Upper end of the manhole
- (D) First step in manhole
- (A) A sewer drops from a height
- (B) A branch sewer joins the main sewer at higher level
- (C) A lamp is inserted to check obstruction
- (D) None of these
- (A) Potassium permanganate
- (B) Sulphuric acid and napthamine
- (C) Phenol-di -sulphuric acid and potassium hydroxide
- (D) None of these
- (A) Free board of 0.3 m may be provided
- (B) The baffles or tees are extended up to top level of scum
- (C) The clear space between the baffle top and covering slab is about 7.5 cm
- (D) All the above
