All Free Agriculture MCQs with Answers

• A. None of these
• B. Compressibility
• C. Capillary
• D. Surface Tension

Explanation: Surface tension pulls the liquid surface inward and tends to minimise its surface area, making small falling raindrops nearly spherical.

• A. Specific weight
• B. Mass weight
• C. Mass density
• D. Capillary rise is significant

Explanation: Specific weight is the weight of liquid per unit volume, expressed as γ = ρg.

• A. Density of liquid
• B. Specific gravity of liquid
• C. Specific gravity of water
• D. Density of water

Explanation: Specific gravity is the ratio of a substance’s specific weight to the specific weight of water under the same reference conditions.

• A. Sub-surface flow
• B. All are correct
• C. Ground flow
• D. Base flow

Explanation: Base flow is the relatively sustained contribution to streamflow supplied by groundwater and other delayed subsurface drainage.

• A. Alignment of canal
• B. Lining of canal
• C. Designing of canal
• D. All are correct

Explanation: Canal alignment is the fixing of the canal’s route and ground points so that the designed centre line can be set out correctly.

• A. Full supply level
• B. Static water level
• C. Water table
• D. All are correct

Explanation: At zero pumping or discharge, the water level in a well reaches its natural equilibrium level, called the static water level.

• A. Specific volume
• B. Specific retention
• C. Specific yield
• D. All are correct

Explanation: Specific yield is the volume of water that a unit volume of saturated aquifer releases under gravity.

• A. Confined aquifer
• B. Un-confined aquifer
• C. No-Artesian aquifer
• D. All are correct

Explanation: A confined aquifer is trapped between relatively impervious layers, so its groundwater is under pressure and may rise above the aquifer…

• A. 95%
• B. 96%
• C. 97%
• D. 97.5%

Explanation: About 97.5% of the Earth’s water is saline, mostly contained in oceans, while only about 2.5% is freshwater.

• A. 70%
• B. 75%
• C. 80%
• D. 85%

Explanation: In the conventional irrigation classification used in such texts, readily available moisture is taken as about 80% of the available soil…

• A. Effective water
• B. Soil-moisture content
• C. All are correct
• D. Capillary water

Explanation: Capillary water is held in the small pores of soil and forms the main water supply available to plant roots.

• A. Porosity
• B. Fine particles of soil
• C. Coarse particles of soil
• D. Climatic conditions

Explanation: Root-zone water storage is closely related to soil porosity, because pore spaces determine how much water the soil can retain after…

• A. Haro
• B. Kohat
• C. Kabul
• D. Hub

Explanation: Tanda Dam is associated with the Kohat region and is constructed across the Kohat stream or river system.

• A. Top of dam
• B. Face of dam
• C. Bottom of dam
• D. All are correct

Explanation: Hydrostatic water pressure increases with depth, so the greatest lateral water pressure and resulting stress occur near the bottom of the…

• A. Tunnels
• B. Chuttes
• C. Weep holes
• D. Penstocks

Explanation: Penstocks are strong, steep pipes or conduits that carry pressurized water from a reservoir or forebay to hydroelectric turbines.

• A. 1/2 WH2
• B. 1/2 WH
• C. WH
• D. All are correct

Explanation: Hydrostatic pressure increases uniformly with depth, producing a triangular pressure distribution whose resultant is one-half the unit…

• A. Turbulent
• B. Laminar
• C. Rotational
• D. Compressible

Explanation: Groundwater moves through very small pore spaces at low velocity, so viscous forces dominate and the flow is generally laminar.

• A. Algai bacteria
• B. Fungi bacteria i
• C. Pathogenic bacteria
• D. Insects

Explanation: Sterilization aims to destroy pathogenic microorganisms, especially disease-causing bacteria, in water.

• A. 30 mg/litre
• B. 40 mg/litre
• C. 50 mg/litre
• D. 60 mg/litre

Explanation: For a low-pressure boiler, the commonly specified permissible hardness of feed water is about 50 mg/L, expressed as calcium carbonate.

• A. paved-escape
• B. Bye-wash
• C. Water escape
• D. Disposal channel

Explanation: A paved escape is an escape channel lined with masonry or pitching stones to safely carry surplus water away from a tank or reservoir.