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  • Question

  • The main constituents of gas generated during the anaerobic digestion of sewage sludge are :


  • Options
  • A. carbon dioxide and methane
  • B. methane and ethane
  • C. carbon dioxide and carbon monoxide
  • D. carbon monoxide and nitrogen

  • Correct Answer
  • carbon dioxide and methane 

    • GATE Exam Questions problems

    Search Results

    • 1. A direct runoff hydrograph due to an isolated storm with an effective rainfall of 2 cm was trapezoidal in shape as shown in the below figure. The hydrograph corresponds to a catchment area (in sq. km) of

    • Options
    • A. 790.2
    • B. 599.4
    • C. 689.5
    • D. 435.3
      • Discuss
    • 2. Two samples of water A and B have pH values of 4.4 and 6.4 respectively. How many times more acidic sample A is than sample B?

    • Options
    • A. 0
    • B. 50
    • C. 100
    • D. 200
      • Discuss
    • 3. The most commonly used sampler for obtaining a disturbed sample of the soil is

    • Options
    • A. split spoon sampler
    • B. open drive sampler
    • C. piston sampler
    • D. thin wall shelby tube sampler
      • Discuss
    • 4. The modulus of rupture of concrete gives

    • Options
    • A. the direct tensile strength of the concrete
    • B. the direct compressive strength of the concrete
    • C. the tensile strength of the concrete under bending
    • D. the characteristic strength of the concrete
      • Discuss
    • 5. The expression for the specific speed of a pump :

    • Options
    • A. does not include the diameter of the impeller
    • B. yields larger values for radial pumps than for axial flow pump
    • C. is necessarily non dimensional
    • D. includes power as one of the variables
      • Discuss
    • 6. The specific gravity of paving bitumen as per IS:73-1992 lies between

    • Options
    • A. 1.10 and 1.06
    • B. 1.06 and 1.02
    • C. 1.02 and 0.97
    • D. 0.97 and 0.92
      • Discuss
    • 7. If soil is dried beyond its shrinkage limit, it will show :

    • Options
    • A. Large volume change
    • B. Moderate volume change
    • C. Low volume change
    • D. No volume change
      • Discuss
    • 8. The degree of kinematic indeterminacy of the rigid frame with clamped ends at A and D shown in the below figure is,

    • Options
    • A. 4
    • B. 3
    • C. 2
    • D. zero
      • Discuss
    • 9. The lateral ties in a reinforced concrete rectangular column uncle: axial compression are used to :

    • Options
    • A. avoid the buckling of the longitudinal steel under compression
    • B. provide adequate shear capacity
    • C. provide adequate confinement to concrete
    • D. reduce the axial deformation of the column
      • Discuss
    • 10. A weir on a permeable foundation with downstream sheet pile is shown in the figure below. The exit gradient as per Khosla's method is

    • Options
    • A. 1 in 6.0
    • B. 1 in 5.0
    • C. 1 in 3.4
    • D. 1 in 2.5
      • Discuss

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