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1) Amount of liquid that a man can spray in a day is: a. 60 litres liquid b. 70 litres liquid c. 80 litres liquid d. 90 litres liquid
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2) Tank capacity of compression sprayer is: a. 10 litres b. 12 litres c. 14 litres d. 20 litres
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3) Hand atomizer is used for spraying in: a. Nursery b. Orchard c. Field crop d. None of these
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4) The pump is used in power-operated sprayer is: a. Plunger type b. Diaphragm type c. Gear type d. Piston type
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5) The pump used in airplane sprayers: a. Dentrifugal and gear pump b. Gear and Diaphragm pump c. Diaphragm and centrifugal pump d. Plunger and centrifugal pump
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6) In power-operated sprayer, the pump works at a pressure of: a. 2-5 Kg/cm2 b. 3-8.5 Kg/cm2 c. 4-12 Kg/cm2 d. 5-15 Kg/cm2
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7) In airplane sprayer, the tank capacity ranges between: a. 450-1000 liters b. 450-1500 litres c. 450-1800 litres d. 450-2200 litres
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8) A plunger type hand duster is suitable for dusting: a. Small area b. Medium area c. Large area d. All are correct
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9) A tank capacity of rotary type hand duster is about: a. 2.6-4.5 kg b. 3.6-4.5 kg c. 4.0-0.5 kg d. 5.0-8.5 kg
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10) A 3.6 to 4.5 kg dust is enough for dusting of: a. 0.2-0.4 ha b. 0.4-0.6 ha c. 0.5-0.7 ha d. 0.0-0.8 ha
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11) The height of spray for rotary type hand sprayer for effective spraying is: a. 1 metre b. 2 metres c. 3 metres d. 4 metres
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12) In rotary type power duster, the speed of blower is: a. 1000 rpm b. 2000 rpm c. 3000 rpm d. 4000 rpm
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13) In rotary type power duster, the dust can be blown at a height of: a. 3 metres b. 4 metres c. 5 metres d. 6 metres
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14) The tank capacity of airplane duster varies from: a. 100-500 kg b. 200-800 kg c. 220-900 kg d. 220-120 kg
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15) The hand operated compressed air sprayer utilizing the pressure from: a. 1.4-4.0 kg/cm2 b. 1.75-5.0 kg/cm2 c. 1.0-6.0 kg/cm2 d. 2.5-7.5 kg/cm2
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16) 277 per hectare application rate of low volume sprayer is: a. 2 litres b. 3 litres c. 4 litres d. 5 litres
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17) Per hectare application rate of low volume sprayer is: a. 5-100 litres b. 5-200 c. 5-300 litres d. 5-400 litres
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18) Per hectare application rate of high volume sprayer is: a. Less than 400 litres b. 400 litres c. More than 400 litres d. None of these
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19) Per hectare application rte of smogging is: a. 1 liter b. Less than liter c. 2 liter d. Less than 2 liter
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20) A nozzle used in foam sprying is: a. Flat fan nozzle b. Solid cone nozzle c. Flooding nozzle d. Air aspirting nozzle
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21) Wet dusting is beneficial for: a. Drought area b. Semi-arid area c. Low rainfall areas d. Heavy rainfall areas
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22) Insecticide capsule are used at: a. 2.5 cm below the soil surface b. About 2.5 cm from each hill c. From 3 to 5 days after transplanting d. All are correct
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23) ONK-B sprayer duster is used as: a. Spraying of liquid b. Dusting of dry pesticides c. Dusting of wet pesticides d. All are correct
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24) The main function of sprayer is: a. To break the liquid into droplet of effective size b. To distribute the droplet in uniformly over the plant c. To regulate the amount of liquid to avoid excessive application d. All are correct
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25) Swirl plate is a part of: a. Flat fan nozzle b. Cone nozzle c. Spinning disc nozzle d. None of these
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26) Spray gun is known as: a. Nozzle b. Lance c. Nozzle disc d. Trigger
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27) The motor of ultra low volume sprayer is powered by battery of: a. 3-6 volt b. 6-12 volt c. 12-18 volt d. 12-24 volt
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28) Spinning disc is used in: a. Low volume spray b. High volume spray c. Ultra low volume spray d. Foam spraying
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29) Speed of spinning disc of sprayer varies from: a. 2000-4000 rpm b. 2000-6000 rpm c. 2000-8000 rpm d. 2000-9000 rpm
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30) Droplet size of ultra low volume sprayer varies from: a. 25-50 micron b. 35-70 micron c. 35-100 micron d. 40-120 micron
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31) Ultra low volume sprayer is used for application of: a. Insecticides b. Pesticides c. Weedicides d. All are correct
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32) Rocker sprayer is used for spraying: a. Small crops b. Tall crops c. Godown and factories d. All are correct
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33) Another name of positive displacement pump is: a. Piston pump b. Plunger pump c. Centrifugal pump d. All are correct
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34) Volumetric efficiency of piston pump is about: a. 60 per cent b. 70 per cent c. 80 per cent d. 90 per cent
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35) Rotary pump is used as: a. Low pressure sprayer b. High pressure spray c. Ultra low volume sprayer d. All are correct
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36) Discharge rate of centrifugal pump varies at: a. 14th of speed b. Square of speed c. Cube of speed d. None of these
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37) Power of centrifugal pump varies as: a. Square of speed b. Cube of speed c. Half of speed d. None of these
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38) A machine used to generte and distribute gases or smoke is known as: a. Sprayer b. Duster c. Fumigator d. None of these
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39) Flame gun is used for killing the: a. Insects b. Pests c. Weeds d. All are correct
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40) In hydraulic sprayers, the degree of atomization is primarily a function of: a. Air velocity b. Size of nozzle c. Size and shape of atomizer d. Liquid pressure and the nozzle characteristics
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41) Hollow cone nozzle employed on boom type sprayer have spray angle of: a. 30-50 degree b. 40-60 degree c. 60-95 degree d. 90-120 degree
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42) Nozzle spacing on boom is governed by: a. Height of crop b. Density of crop c. Type of spray d. All are correct
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43) Nozzle spacing in boom is governed by: a. Inclined b. Axial horizontal c. Axial vertical d. All are correct
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44) Flooding nozzles have spray angle of: a. 30-45 degree b. 60-90 degree c. 90-120 degree d. 100-150 degree
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45) In electrostatic spraying, the volume of liquid per hectare is: a. Less than 1 litre b. Less than 5 litres c. Less than 50 50 litres d. Less than 100 litres
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46) The amount of liquid required for spraying plantation crop is: a. 400-60 1/ha b. 600-800 1/ha c. 800-1000 1/ha d. 1000-1200 1/ha
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47) The application rate of dusters is: a. Less than 10 kg/ha b. 10-15 kg/ha c. 20-25 kh/ha d. 30-40 kg/ha
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48) The immersion method is used for identifying: a. Nozzle discharge b. Droplet size c. Spraying pressure d. Spray pattern
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49) More spraying pressure results in: a. Reduction in droplet size b. Increase in droplet size c. No change in droplet size d. None of these
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50) The mechanical efficiency of spray pumps ranges from: a. 50-60% b. 50-70% c. 50-80% d. 50-90 %
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51) Air blast sprayer is used for: a. Gardens b. Field crops c. Orchards d. Nursery
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52) Air blast sprayer was developed in: a. 1920 b. 1940 c. 1960 d. 1980
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53) The maximum application rate of air blast sprayer for crchards may be: a. 700-1700 1/ha b. 1700-2700 1/ha c. 2700-3100 1/ha d. 3700-4700 1/ha
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54) The minimum application rate with air blast sprayer for crchards may be: a. 10-20 1/ha b. 25-50 1/ha c. 45-90 1/ha d. 150-250 1/ha
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55) The pump used in most of the hydraulic sprayers is: a. Plunger pump b. Positive displacement pump c. Reciprocating pump d. Vane pump
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56) Tank of hydraulic pump is made of: a. Fibre glass b. PVC c. Plastic d. Metal
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57) The forward operating speed of power sprayer varies from: a. 2-5 kmph b. 4.8-8 kmph c. 6.8-12 kmph d. 10-25 kmph
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58) Knapsack sprayer is suitable for: a. Brushes b. Small trees c. Row crop d. All are correct
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59) The nozzle used for band treatments of herbicide along row crop is: a. Hallow cone b. Solid cone c. Flat fan d. Jet stream
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60) The solid cone nozzle is used for: a. Weedicides application b. Herbicide application c. Fungicide application d. Insecticide application
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