Description : In what ratio must a person mix three kinds of musted seeds costing Rs.65/kg, Rs.70/kg and Rs.105 /kg so that the resultant mixture when sold at Rs.96/kg yields a profit of 20%? a) 1:2:4 b) 3:7:6 c) 1:4:2 d)1:8:6 e) 40 : 8 : 25
Last Answer : E The resultant mixture is sold at a profit of 20% at Rs.96/kg i.e. 1.2 (cost) = Rs.96 => Cost = = Rs.80 / kg. Let the three varities be A, B, and C costing Rs.65, Rs.70 and Rs.105 respectively. The ... be mixed. A:C=4:5 B:C=2:5 The resultant ratio A : B : C :: 40 : 8 : 25.
Description : . A preventive method of weed control a). Using weed free seeds b). Using clean machineries c). Following quarantine measures d). All of these
Last Answer : d). All of these
Description : In which weed seeds mature after uproot ing the plant? a). Stellaria media (Chick weed) b). Portulaca oleracea c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : A weed producing > 1 lakh seeds/plant a). Amaranthus sp b). Portulaca sp c). Both a and b d). Cascutta sp
Description : Surface germinating weed seeds are at depth a). 1cm b). 2.5cm c). 7.5cm d).15cm
Last Answer : a). 1cm
Description : Shallow germinating weed seeds are at depth a). Upto 5cm b).10 cm c).15cm d).7.5cm
Last Answer : a). Upto 5cm
Description : Deep germinating weed seeds are at depth of a). Upto 5cm b). 2.5 cm c). 15cm d). 1cm
Last Answer : c). 15cm
Description : Weed intensity if number of weeds is 110/m2 and wheat plants are 90/m2. a). 55% b). 110% c). 22.5% d). 77.5%
Last Answer : a). 55%
Description : At what height must top rails be fitted above working platform? a. Between 90 cm (35 inches) and 110 cm (43 inches) b. Between 100 cm (39 inches) and 120 cm (47 inches) c. Between 95 cm (38 inches) and 115 cm ( 45 inches) d. Between 105 cm (41 inches)and 125 cm (49 inches)
Last Answer : c. Between 95 cm (38 inches) and 115 cm ( 45 inches)
Description : Aniline point of high speed diesel may be about __________ °C. (A) 35 (B) 70 (C) 105 (D) 150
Last Answer : (B) 70
Description : Lowest dose of the benchmark a).1/90 b).1/100 c).1/80 d).1/50
Last Answer : b).1/100
Description : Most dominant factor influencing weed composition in a field is a). Soil moisture b). Soil type c). Soil texture d). Soil temperature
Last Answer : a). Soil moisture
Description : The weather condition is optimum for herbicidal weed control? a). High temperature low humidity b). High temperature high humidity c). warm temperature high humidity d). cold temperature low humidity
Last Answer : c). warm temperature high humidity
Description : Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C. (A) 50 (B) 70 (C) 90 (D) 140
Last Answer : (C) 90
Description : What is the recommended minimum range of illumination required by BS EN 970 for inspection of a welded surface? a) 90 to 125 lux b) 150 to 250 lux c) 350 to 500 lux d) 35 to 50 lux
Last Answer : c) 350 to 500 lux
Description : If Echinochloa falls in frequency class ‘E’, the weed community is said to be a). Contiguous b). Heterogenous c). Homogenous d). Random
Last Answer : c). Homogenous
Description : If weed population is 70/m2 and the crop 140/ m2, weed intensity would be a). 33.3% b). 66.6% c). 50% d). 73.4%
Last Answer : a). 33.3%
Description : If the count of Echinochloa in weedy check is 70 and that in a treatment 25/m2, weed control efficiency will be a). 54.3% b). 64.3% c). 73.4% d). 79.6%
Last Answer : b). 64.3%
Description : If the yield from weed free is 3500 kg and that from weedy 1500 kg/ha, weed index would be a). 57.1% b). 133.3% c). 45.0% d). 25.6%
Last Answer : a). 57.1%
Description : . A ceremonial weed a). Cynodon dactylon b). Datura stramonium c). Tagetus sp d). All of these
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Nelumbo nucifera (Lotus flower) d). All of these
Description : A ceremonial weed a). Asparagus racemosus (Shatawari) b). Cynodon dactylon (Dhoob ghaas) c). Both a and b d). Digitaria sanguinalis
Description : To manage grassy weed flora in barley which of the herbicides is to be applied a). Pendimethalin b). Isoproturon c). a and b d). Metsulfuron
Last Answer : c). a and b
Description : To manage mixed weed flora in barley which of the herbicides is to be applied a).2,4-D b). Isoproturon c). a and b as tank mix d). None of these
Last Answer : c). a and b as tank mix
Description : A herbicide requiring good spray coverage of all foliage for effective control of a weed population a).Paraquat b). Glyphosate c). Atrazine d). Isoproturon
Last Answer : a).Paraquat
Description : A curvilinear relationship between weed density and crop yield was reported by a). Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : b). Roberts and Bonds (1975)
Description : The sigmoidal relationship between weed density and crop yield was proposed by a).Zimdahl 1980 b). Roberts and Bonds (1975) c). Cousens et al (1985) d). None of these
Last Answer : a).Zimdahl 1980
Description : A weed accumulate over 550 ppm of Zn in its dry matter a). Digitaria b). Setaria lutescens c). Portulaca d). Chenopodium
Last Answer : b). Setaria lutescens
Description : A natural pre-emergence weed control in turf grass a). Corn gluten meal b). Bialaphos c). Sulcotrione d). Cinmethylin
Last Answer : a). Corn gluten meal
Description : With poor weed management, a field could shift to a). Predominant weed species b). Species not effectively controlled c). Species not responded to control meas ures d). All the above
Last Answer : d). All the above
Description : . A non-competitive crop requiring weed free period of three or more months a). Maize b). Rice c). Soybean d). Onion
Last Answer : d). Onion
Description : A period in the ontogeny of crop at which maximum crop weed competition occurs is called a). Economic threshold b). Gain threshold c). Competitive threshold d). None
Last Answer : d). None
Description : The effective solution to manage weed shifts a). Herbicide combinations b). Herbicide rotations c). Crop rotations d). All
Last Answer : d). All
Description : The competitive crop requiring weed free period of about 3-4 weeks a). Soybean b). Carrot c). Garlic d). Onion
Last Answer : a). Soybean
Description : A noxious weed of South India a). Cynodon b). Cyperus c). Wild brinjal d). All
Description : Herbicide which increase tuber size be sides weed control in potato a). EPTC b). Fluchloralin c). Pendimethalin d). Atrazine
Last Answer : a). EPTC
Description : Largest pre-emergence herbicide for weed control in citrus and pineapple orchards a). Atrazine b). Metham c). Allyl d). All
Last Answer : b). Metham
Description : A very potent herbicide for the control of perennial, broad-leaved weed and brushes a). Atrazine b). 2,4-D c). Picloram d). Amitrole
Last Answer : c). Picloram
Description : Effective rate (kg/ha) of 2,4-D for weed control a). 0.2-0.5 b). 0.5-1.0 c). 2 d). 5
Last Answer : b). 0.5-1.0
Description : Direct contact herbicide application can be achieved by a). Re-circulating sprayer b). Weed wick wiper c). Roller applicator d). All
Description : . Klamath weed (Hypericum perforatum) is controlled by an insect a). Chrysolina hyperici (Beetle) b). Chrysolina gamellata (Beetle) c). Agrilus hyperici (Root borer) d). All of these
Description : Important quality of bioagents a). Attack only host plant b). Free from predators/parasites and quick adoption to new environment c). Able to kill reproductive parts of weed d). All of these
Description : Biological weed control is not successful because a). Not possible to eradicate weed b). Bioagents are weed specific c). Controlled only introduced weeds d). All of these
Description : An eradication method of weed control a). Killing underground parts of weeds by tillage b). Using soil sterilants c). Repeated foliar application on perennial weeds d). All of these
Description : The weed less responsive to nitrogen a). Cyperus b). Cynodon c). Both a and b d). None of these
Description : Cultural practice reducing weed population a). Arresting flowering b). Deep ploughing c). Puddling d). All of these
Description : Weed eradication is rare but practiced in a). Lantana b). Saccharum sp c). Striga sp d). All of these
Description : A simple perennial weed a). Ipomoea carnea b). Lantana camara c). Both a and b d). None of these
Description : A multi-season annual weed a). Echinochloa colona b). Eclipta alba c). Phyllanthus nirurii d). All of these
Description : Kharif annual weed a). Ammannia bacifera b). Cyperus difformis c). Ludwigia parviflora d). All of these