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PART 4 (OBJECTIVE TYPE) - AREA 2: LAND AND WATER RESOURCES ENGINEERING AND ALLIED SUBJECT

Thursday, August 21, 2025

RED (WRONG ANSWER)  / GREEN (CORRECT ANSWER) 


Question 1: Irrigation and Drainage Eng’g: Using current meter in getting the velocity of stream, what is the value of a in v = a + bn?
A) Proportionality Constant
B) Starting Velocity
C) Number Of Turns
D) Average Velocity
Question 2: Soil Science: What is the most abundant microorganism found in the soil?
A) Bacteria
B) Protozoa
C) Molds
D) Fungi
Question 3: Hydrometeorology: Water retained about individual soil particles by molecular action and can be removed only by heating.
A) Hydroscopic Water
B) Gravitational Water
C) Hygroscopic Water
D) Capillary Water
Question 4: Hydrometeorology: Geologic formation arranged in decreasing economic considerations.
A) Aquifer, Aquitard, Aquiclude, Aquifuge
B) Aquifer, Aquiclude, Aquifuge, Aquitard
C) Aquifer, Aquiclude, Aquitard, Aquifuge
D) Aquifer, Aquifuge, Aquiclude, Aquitard
Question 5: Hydrometeorology: Volume of voids over total soil volume.
A) Void Ratio
B) Porosity
C) Apparent Specific Gravity
D) Real Specific Gravity
Question 6: Hydrometeorology: Moisture content of the soil when the gravitational water has been removed.
A) Field Capacity
B) Gravitational Water
C) Permanent Wilting Point
D) Available Moisture
Question 7: Hydrometeorology: It is the ratio of the dry weight of soil particles to the weight of an equal volume of water.
A) Void Ratio
B) Apparent Specific Gravity
C) Porosity
D) Real Specific Gravity
Question 8: Hydrometeorology: 75% of available moisture is called:
A) Hygroscopic Water
B) Readily Available Moisture
C) Vadose Water
D) Permanent Wilting Point
Question 9: Hydrometeorology: Ratio of the dry weight of the soil to the weight of the water with volume equal to the soil bulk volume.
A) Apparent Specific Gravity
B) Bulk Density
C) Real Specific Gravity
D) Porosity
Question 10: Irrigation and Drainage Eng’g: Which of the following is the most economic type of drainage system?
A) Herringbone
B) Double Main System
C) Gridiron
D) Parallel Drain
Question 11: Irrigation and Drainage Eng’g: One liter per second is equal to?
A) 0.01 m3/sec
B) 0.001 m3/sec
C) 10 m3/min
D) 100 m3/hr
Question 12: Hydrometeorology: Water held by forces of surface tension and continuous films around the soil particles.
A) Gravitational Water
B) Groundwater
C) Hygroscopic Water
D) Capillary Water
Question 13: Irrigation and Drainage Eng’g: Amount of drainage water to be removed per unit time per unit area.
A) Drainage Volume
B) Drainage Area
C) Drainage Coefficient
D) Drainage Requirement
Question 14: Hydrometeorology: The sum total of head above the vapor pressure of the liquid being pumped at a given pumping temperature.
A) Pump Static Head
B) Total Static Head
C) Required Net Positive Suction Head
D) Total Dynamic Head
Question 15: Hydrometeorology: The moisture content of the soil when the tension is 15 atmosphere.
A) Saturation Point
B) Field Capacity
C) Available Moisture
D) Permanent Wilting Point
Question 16: Wastewater Engineering: Agency that controls the re-use of wastewater.
A) Bureau of Soil and Water Management
B) National Irrigation Administration
C) Department of Environment and Natural Resources
D) Department of Agriculture
Question 17: Irrigation and Drainage Eng’g: The simplest form of open channel flow computation.
A) Steady Uniform Flow
B) Unsteady Uniform Flow
C) Steady Non-Uniform Flow
D) Unsteady Non-Uniform Flow
Question 18: Irrigation and Drainage Eng’g: It is a gate placed across a stream from which it is desired to divert water.
A) Check gate
B) Spillway
C) Weir
D) Head gate
Question 19: Hydrometeorology: Change in phase from water vapor to ice.
A) Sublimation
B) Adsorption
C) Condensation
D) Evaporation
Question 20:Irrigation and Drainage Eng’g: Most commonly used type of irrigation.
A) Sprinkler Irrigation
B) Drip Irrigation
C) Furrow Irrigation
D) Border Irrigation
Question 21: Soil and Water Conservation Eng’g: A principle of English Common Law which recognizes the right of riparian owner to make reasonable use of streamflow provided the water is used on riparian land.
A) Exec. Order on Riparian Right
B) Riparian Act
C) Riparian Right
D) Presid’l Decree on Riparian Right
Question 22: Hydrometeorology: Water content in mineral soil.
A) 25%
B) 40%
C) 45%
D) 50%
Question 23: Wastewater Engineering: Conversion of organic matter to ammonia.
A) Gasification
B) Gasification
C) Nitrification
D) Ammonification
Question 24: Engineering Surveying: 1 degree of equator of earth is equal to:
A) 4 minutes
B) 10 minutes
C) 8 minutes
D) 7 minutes
Question 25: Hydrometeorology: The lateral movement of water in the soil.
A) Flooding
B) Seepage
C) Percolation
D) Infiltration
Question 26: Crop Science: What nutrient deficiency if rice leaf are dark green?
A) Potassium
B) Nitrogen
C) Phosphorus
D) Calcium
Question 27: Hydrometeorology: Type of stream that is also known as loosing stream. Water table in this case falls below the stream channel bed.
A) Effluent Stream
B) Influent Stream
C) Perennial Stream
D) Gaining Stream
Question 28: Irrigation and Drainage Eng’g: A closed conduit usually circular, square or rectangular in cross section, used for conveying water across and under an elevated roadway, embankment and dikes.
A) Gate
B) Culvert
C) Flume
D) Drop
Question 29: Hydrometeorology: The pressure gauge measures the reading as 35 psi. Compute for the absolute pressure assuming standard atmospheric pressure.
A) 49.7 psi
B) 50.7 psi
C) 62.7 psi
D) 70.7 psi
Question 30: Solid Geometry: If the sphere is cut at its longest diameter, what will be the shape cross-section of the sphere?
A) Ellipse
B) Arc
C) Circle
D) Cone

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