701. The hydraulic mean depth for a circular pipe of diameter d is ____________________?
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A. d/4

B. d/6

C. d/2

D. d/3

702. The run-off from catchment areas, Roads, buildings and other fallow lands is called ____________________?
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A. Surface run-off

B. Dry weather flow

C. Storm water

D. Rain water

703. A module or outlet in which discharge depends upon the difference of head between distributary and the water course is called ___________________?
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A. Non-modular

B. Semi-modular

C. Rigid module

D. Modular

704. Onion is a ___________ rooted crop?
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A. Shallow

B. Spread

C. Deep

D. Non-rooted

705. Cotton plant belong to one of the following categories______________?
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A. C4 plant

B. on of these

C. C3 plant

D. CAM plant

706. A plot of graphical representation showing river flow against time is called _____________________?
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A. Hydrograph

B. Monograph

C. All are correct

D. Hyetograph

707. Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?
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A. Weight

B. Specific weight

C. Specific gravity

D. Volume
708. An outlet through which the discharge depends upon the water level in the distributary is called ___________________?
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A. Flexible module

B. Rigid module

C. Non-flexible

D. Non-modular

709. The climates of sindh province comes under__________________?
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A. Temperature

B. Sub tropical

C. tropical

D. all

710. If in a river the flood rises and falls suddenly due to storm rain, then such river is called __________________?
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A. Virgin

B. Deltaic

C. Tidal

D. Flashy
711. A fixed reference point from which the discharge of flowing water is measured is________________?
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A. Reduce level

B. Contour point

C. Bench mark

D. Reference point

712. The depth of water in a channel, corresponding to minimum specific energy is called ________________?
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A. None of these

B. Full supply depth

C. Normal depth

D. Critical depth
713. To keep the Hydraulic structure safe against undermining the ________________ should be safe?
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A. Critical exit gradient

B. Hydraulic gradient

C. Creep length

D. Exit gradient
714. Crop ideotype refers to________________?
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A. All the above

B. Good plant type

C. Model plant type

D. Ideal plant type

715. When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?
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A. Ponding on down stream

B. All are correct

C. Lowering down of bed

D. Retrogression
716. If E1 is the energy before the hydraulic jump and E2 is the energy after the hydraulic jump the efficiency of jump is then given by _____________________?
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A. E1 / E2

B. E2 / E1

C. E2 E1

D. E1 E2

717. On the basis of cotton cultivated area which on of the following countries occupies first position ?
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A. China

B. India

C. Pakistan

D. America

718. The quantity of water lost by transpiration from the plants or crops and evaporation from fields adjacent to these plants is called ___________________?
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A. Un-confined water

B. Consumptive use

C. a & b are correct

D. Evapo-transpiration

719. Crop rotation means growing_________________?
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A. Growing green manures

B. Growing different crops

C. Growing fodder crops

D. Same craps

720. Main reason behind the shedding of flower in cotton is__________________?
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A. Low temperature

B. Cloudy day

C. High temperature

D. Humidity

721. The process to dilute the available salts from root Zone by providing simply canal water is known as __________________?
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A. Reclamation

B. Leaching

C. de-salting

D. Recultivation

722. Drought is measuring in terms of________________?
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A. Photosynthesis

B. Yield performance

C. All the above

D. Root length of seeding

723. The delta the total depth of water consumed by crop up to its maturity, the delta of cotton is ____________________?
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A. 40 cm

B. 50 cm

C. 100 cm

D. 80 cm

724. There has been emphasis on the conservation of wild relatives of cultivated plants because wild plants________________?
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A. Carrying many useful genes which are lost in cultivated plants

B. Grow better then cultivated plants

C. Needed to understand the origin of cu;cultivated plants

D. Serve, as valuable fodder plants

725. The management of kind by planting a series of crops, pastures or following to maximize production with sustaining land quality is called_______________?
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A. Crop sequence

B. Crop management

C. Crop rotation

D. Cropping system

726. Net irrigation + field irrigation losses are the requirement of _____________________?
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A. Basin irrigation

B. Furrow irrigation

C. Full irrigation

D. Field irrigation
727. The delta the total water depth required by a crop up to its maturity the delta of wheat is _____________________?
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A. 50cm

B. 30cm

C. 60cm

D. 40 cm

728. The water force per meter length on a vertical wall is equal to_________________?
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A. w H

B. WH2 2

C. W.H/2

D. wh2

729. Raising of only one crop in a year, when there is seasonal supply of water is called______________?
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A. Monocropping

B. Intensive cropping

C. Specialized farming

D. Monoculture

730. The water evaporates from paddy surfaces to the atmosphere in the form of water vapours, these water vapours get collected in the atmosphere and behave & like_________________?
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A. Snow

B. Water

C. Gas

D. Ice particles

731. When seepage water after passing the ground water aquifer joins the surface stream, such stream will be called_____________________?
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A. Influent stream

B. Storm stream

C. Effluent stream

D. Rain stream

732. the phenomenon of evaporation from water surfaces, from soil surfaces around the plants and from plants and transpiration from plants is called ___________________?
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A. All are correct

B. Evaporation

C. Transpiration

D. Evapotranspiration
733. The lower limit of factor of safety against over turning in a gravity is _______________________?
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A. 1.4

B. 1.6

C. 1.3

D. 1.5
734. The precipitation that falls during the growing season of the crop is called__________________?
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A. Useful rain fall

B. all are correct

C. Monsoon rain fall

D. Direct rain fall

735. It is important to keep the saturation gradient line within the body of a embankment of canal, the saturation gradient line in loomy soils lie at___________________?
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A. 1:2 to 1:4

B. 1:3 to 1:5

C. 1:5 to 1:7

D. 1:4 to 1:6
736. A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?
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A. Fish pond

B. Fish escape

C. Fish ladder

D. Fish pool

737. Indus river is one of the longest river of Asia measuring about_____________________?
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A. 2500 Km

B. 3200 Km

C. 2900 Km

D. 3000 Km

738. The discharge through rectangular channel is maximum when Hydraulic mean depth m is equal to ______________?
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A. depth/ 2

B. depth/ 3

C. depth/ 4

D. 2 / 3 depth

739. A mine or tunnel for collecting seepage water in rock or dam is called ____________________?
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A. Water tunnel

B. Seepage Drain

C. Seepage gallery

D. Seepage tunnel

740. Aeration holes are provided to reduce the inside saturation pressure ____________________?
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A. In a suppressed weir

B. In all weir

C. In a cippoletti weir

D. In a weir with end contractions

741. In the initial stage of rainfall, when soil moisture available in the root zone is very low, the rate of infiltration ?
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A. Normal

B. Reduces

C. remain stagnant

D. Increases
742. In alluvial river due to the action of centrifugal force, bends are developed by scouring on concave and silting on convex _____________________?
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A. Meandering

B. Silting & scouring

C. Degrading

D. Aggrading

743. Seeds which dried at low moisture contents and stored at low temperature without loosing their viability are________________?
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A. Active seeds

B. Certified seeds

C. Orthodox seeds

D. Recalcitrant seeds

744. A curve showing the maximum flow in the river and mean time reduces flow. we be called___________________?
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A. All are correct

B. Infiltration capacity curve

C. Infiltration capacity

D. Ground water depletion curve
745. Soil water in excess of hygroscopic and capillary water which moves downward through the soil by the force of gravity is called______________?
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A. sub-surface water

B. Run off water

C. Capillary water

D. Gravitational water
746. When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________________?
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A. High flood level

B. Hydraulic design condition

C. Worst condition

D. Dangerous condition

747. The amount of moisture content present in the air, when it is expressed as weight per unit volume is called ________________?
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A. Absolute Humidity

B. Humidity

C. All are correct

D. relative humidity

748. Allelopathy is an important component in the development of future integrated strategies for____________?
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A. Soil management

B. Water management

C. non of these

D. Weed management
749. The unit of volume of water used in irrigation practice in FPS system is Acre-Foot. there fore one Acre- Foot is equal to ___________________?
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A. 41560ft3

B. 43560 cubic feet

C. 42560ft3

D. 40560ft3

750. Root rot of cotton is a_________________?
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A. Fungal disease

B. Bacterial disease

C. Viral disease