- (A) 10% less
- (B) 20% less
- (C) 10% more
- (D) 20% more
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- (A) Silting occurs at bottom
- (B) Scouring occurs at bottom
- (C) Both silting and scouring occur at bottom
- (D) Neither silting nor scouring occurs at bottom
- (A) 1 –
- (B) 1 –
- (C) ½ (1 –
- (D) ½ (1 –
- (A) Manually
- (B) Mechanically
- (C) Hydraulically
- (D) Electrically
- (A) 20 cm
- (B) 25 cm
- (C) 40 cm
- (D) 50 cm
- (A) Carbondioxide
- (B) Hydrogen sulphide
- (C) Methane
- (D) All of these
- (A) 100 to 500
- (B) 500 to 1000
- (C) 1000 to 1500
- (D) 1500 to 2000
- (A) D²
- (B) D²
- (C) D²
- (D) D²
- (A) Flushing
- (B) Cane rodding
- (C) Wooden pills
- (D) None of these
- (A) Hydrogen sulphide (H2S)
- (B) Carbon dioxide (CO2)
- (C) Methane (CH4)
- (D) All the above
