851. An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called ___________________?
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A. Out let

B. entrance

C. Inlet

D. Mixing

852. The unit of kinetic viscosity is equivalent to ______________________?
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A. cm/sec2

B. cm/sec

C. All are correct

D. cm2/sec
853. For a flood control reservoirs, the effective storage is equal to ___________________?
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A. Useful storage + surcharge storage -valley storage

B. Useful storage + surcharge storage

C. Useful storage valley storage

D. Useful storage + surcharge storage

854. Those crops which increase the nitrogen content of the soil and hence the fertility also are called ___________________?
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A. Cash crops

B. Food crops

C. Fodder

D. Leguminous crops
855. Infiltration capacity curve is the graphical representation, as to how the infiltration capacity varies with time after rainfall this curve was represented by ____________________?
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A. Horton

B. Kennedy

C. Lacy

D. Darcy

856. Direct runoff is the sum of __________________?
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A. Sub-surface run off and deep percolation

B. Surface run-off and mass flow

C. Surface run off and flow

D. Bass flow and ground water run off

857. The free distance on the paddy surface which a wind can travel to any point to rise waves is called_________________?
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A. Wave amplitude

B. Fetch

C. Tide

D. Wave wash

858. The meandering pattern of a river is developed by ____________________?
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A. Average discharge

B. Dominant discharge

C. Maximum discharge

D. Critical discharge

859. A structure constructed in channel width having narrow throat and raised floor in bottom, used for measuring discharge is called _____________________?
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A. Venturimeter

B. Cippoletti weir

C. regulator

D. Venturiflume
860. CLCV stands for__________________?
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A. cotton leaf cotton virus

B. cotton leaf complete virus

C. Cotton leaf cover virus

D. cotton leaf curl virus
861. The down stream sloping glacis of the Hydraulic structure is made in such a way to form automatically the _____________ and dissipate the surplus energy of flowing water?
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A. Hydraulic jump

B. Pond level

C. Afflux

D. HFL

862. A water flow available in the drains without irrigation season i.e.flow of sanitary sewage is called____________________?
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A. Dry weather flow

B. Surface flow

C. Waste water flow

D. Municipal flow

863. The flow in the river due to the floods may be classified as _____________________?
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A. Laminar flow

B. Turbulent flow

C. Irrotational flow

D. Stream line flow

864. The property of liquid which controls its rate of flow is called __________________?
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A. Capillarity

B. Compressibility

C. Specific gravity

D. Viscosity
865. Velocity of flow in a sewer must be form ______________ to ?
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A. 1 m / sec to 3m/ sec

B. 3m / sec to 4m/ sec

C. 4.5 ml sec to 5 m/ sec

D. 4m / sec to 4.5 ml sec

866. The field capacity is the water retained by a saturated soil after free drainage of surplus water to the ground water table but the water retained by a saturated soil after being centrifuged by a centrifugal force of 1000 times that of gravity is called________________?
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A. Equivalent moisture

B. Soil moisture

C. Available moisture

D. Field moisture

867. generally useful life of a reservoir is considered terminated when its -gross storage is reduced by _______________ of the design capacity of the reservoir?
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A. 20%

B. 80%

C. 50% l

D. 100%

868. The wearing away of the land surface by wind, water, ice or other geological agent is called__________________?
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A. Erosion

B. Soil conservation

C. fertility depletion

D. Seepage

869. During the peak stage of river, there exist an out flow from river into the ground water reservoir, in such case river will be called _________________?
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A. Effluent stream

B. Seepage stream

C. Influent stream

D. Storm water stream

870. When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________?
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A. Sensitive

B. Non-flexible

C. Flexible

D. Proportional
871. The disposal of sewage by allowing it to flow and Soak into specially leveled farm land for cultivation purpose is called _____________________?
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A. Trickle irrigation

B. Border irrigation

C. Broad irrigation

D. Check irrigation

872. The inverted filter consists layer of materials of increasing ______________ from bottom to top?
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A. Permeability

B. Up thrust pressure

C. Piping

D. Under mining

873. Which one of the following constitute the best defamation of fruit________________?
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A. A fruit is a product of ovary

B. A fruit is post-fertilization product of the pistil

C. A fruit is a product of flower

D. A fruit is a mature ovary that contain seed
874. Plants which change from the vegetative to the reproductive stage by producing flowers and fruits when the day become longer is called________________?
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A. Long day plants

B. Phototropism

C. Short day plants

D. Photoperiod

875. According to Khoslas theory of seepage, the Exit gradient depends upon ____________________?
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A. Length /depth ratio

B. depth /width ratio

C. depth /Length ratio

D. width /depth ratio
876. A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called_______________________?
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A. Head Regulator

B. All are correct

C. Escape

D. Cross-Regulator

877. To be more close to the actual field conditions, some times artificial rain tests conducted, the instrument used is called ___________________?
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A. v Hydrometer

B. Infiltrometer

C. Rain simulator

D. I.C. curve

878. Silt free water should be supplied to the canals through______________________?
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A. Under sluices

B. Sluice gates

C. Head sluices

D. Scouring sluices

879. The level above the or below the sea level which is also called zero level or datum is called ___________________?
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A. Negative level

B. Reduce level

C. Positive level

D. Soil level

880. In 1991-92 the record production of cotton in Pakistan was_______________?
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A. 1000,000 bales

B. 1200,000 bales

C. 12800,000 bales

D. 1100,000 bales

881. That rain fall which is effectively consumed by the plants to meet its consumptive needs is called__________________?
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A. Monsoon rainfall

B. Effective rain fall

C. All are correct

D. Total rainfall

882. Hydrology is the science which deals with the depletion and recharge of water resources yearly therefore. its knowledge is a must to _________________ properly the water resources?
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A. Manage

B. Remodel

C. Rehabilitate

D. Develop

883. The area irrigated in the year and it grows crops on which water rates are leveled is called____________________?
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A. Area Assessed

B. Area irrigated

C. Area leased

D. Area cultivated

884. The unproductive branches of cotton are called_________________?
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A. Monopodial branches

B. Vegetative branches

C. Sympodial branches

885. That point in a body at which it will balance if loaded or supported is called ____________________?
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A. Centre of pressure

B. Centre of mass

C. Centre of gravity

D. Mass centre

886. Annual rye grass releases a chemical through its root that prevents________________?
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A. Crop seeds

B. weed seed

C. Both a and b

D. non of these

887. A flow in which the quantity of liquid flowing per second is constant is called___________________?
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A. Turbulent flow

B. Steady flow

C. Uniform flow

D. None of these

888. The wall of masonry or concrete, constructed at 90 to the axis of weir to separate normal weir from under sluices is called____________________?
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A. All are correct

B. Toe wall

C. Retaining wall

D. Divide wall
889. The sheet or small layer of water flowing over an ogee spillway is called _________________?
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A. Thin layer

B. Water spillway

C. Water sheet

D. Nappe
890. In a river the flood water dries up before it joins the sea or any other river, such river is called ________________?
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A. Flashy

B. Deltaic

C. Tidal

D. Virgin
891. Among the cotton exporting countries the number of Pakistan is_______________?
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A. 3rd

B. 4<sup>th</sup>

C. 2<sup>nd</sup>

D. 1<sup>st</sup>

892. On the basis of yield of cotton per hectare which of the following country occupies first position ?
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A. Australia

B. America

C. Pakistan

D. India

893. One hectare is equal to___________________?
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A. 1.9 acre

B. 3.47 acre

C. 1.71 acre

D. 2.471 acre
894. Seed rat of American cotton per acre is__________________?
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A. non of these

B. 6-8 kg

C. 15-18 kg

D. 10-12 kg
895. Pasturing system that allows short periods of heavy use followed by recover, period is called as_______________?
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A. Hay grazing

B. Forage grazing

C. Differed grazing

D. Rotational grazing
896. The actual amount H2O present in the air is called_____________?
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A. Relative humidity

B. Absolute humidity

C. Both A and B

D. non of these

897. In Pakistan the area effected due to water erosion is about_________________?
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A. 22 million ha

B. 12 million to

C. 13.05 million lia

D. 15 million lva

898. Diversity of animals and crop species in different ecosystems is called as_______________?
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A. Mirgation

B. Ecology

C. Biodiversity

D. Ecosystem

899. The productive branches of cotton are called________________?
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A. Fruiting branches

B. Sympodial branches

C. Monopodial branches

D. non of these

900. Geographical area of Pakistan in million hectare is_______________?
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A. 80

B. 60

C. 95

D. none of the above