FISHERIES SCIENCE- PAGE 7
1. On division of area of the indicator diagram of an IC engine with the length of the stroke, the value obtained is
(A) Pressure developed during power stroke
(B) Total pressure
(C) Mean effective pressure
(D) Volume of the cylinder at BDC
Ans: C
2. ____________is the device that is used to reduce the sound of the engine, which is provided between exhaust manifold and exhaust pipe
(A) Inlet manifold
(B) Silencer
(C) Decompression valve
(D) Air filter
Ans: B
3.The compression ratio of diesel engine values from
(A) 16:1 to 20:1
(B) 20:1 to 25:1
(C) 25:1 to 30:1
(D) 30:1 to 40:1
Ans: A
4. The mesh prescribed for the cod end of shrimp trawls is
(A) Diamond mesh (B) Square mesh
(C) Hexagonal mesh (D) Octagonal mesh
Ans: B
5. To control over fishing in the coastal region, the gears often banned from specified inshore areas are
(A) Shore seines and cast nets
(B) Gill nets and dip nets
(C) Purse seines and trawls
(D) Long lines and dip nets
Ans: C
6. Over exploitation fishery resources can be reduced through
(A) Selective fishing
(B) Dynamite fishing
(C) Indiscriminate fishing
(D) Fishing in corals
Ans: A
7. The part of echosounder, which convert the electrical energy in to sound energy and vice versa is
8. The transducer of Net sonde is fitted on the _________ of trawl net
(A) Cod end (B) Foot rope
(B) Foot rope
(C) Head rope
(D) Wing
Ans: C
9. Marine Turtles are endangered species which are protected under schedule I of _________ act.
(A) TED act (B) BRD act (C) MFRA (D) Wild Life Protection act
Ans: D
10. The process by which the burnt gases from the cylinder is pushed away by the fresh charge of air of next cycle is called
(A) Suction (B) Exhaust
(C ) Scavenging (D) Super changing
Ans: C
11. Major overhauling of a marine diesel engine is advice-able after
(A) 100 hrs of running
(B) 250 hrs of running
(C) 3000 hrs of running
(D) 6000 hrs of running
Ans: D
12. A unit in the electrical system, which changes voltages from high to low and from low to high is known as
(A) Alternator (B) Transformer
(C) Transducer (D) Cell
Ans: B
13. The velocity of sound wave in water is
(A) 1500 m/min (B) 1500 m/sec
(C) 1500 Km/min (D) 1500 Km/sec
Ans: B
14. The length of the fish corresponding to the zero increment is called as
(A) Asymptotic length
(B) Arbitrary origin of growth
(C) Growth coefficient
(D) Initial condition parameter
Ans: A
15. In seawater a combination of high salinity and high density results in
(A) upwelling
(B) high temperature
(C) temperature optima
(D) low temperature
Ans: B
16. The average sea temperature is in the range of _____ excluding the shore and shallow water and extremes of hottest and coldest parts
(A) 30-35°C (B) 35-40°C
(C) 20-30°C (D) 25-30°C
Ans: A
17. Which chemical element constitutes the major portion of seawater?
(A) Sodium (B) Sulphate
(C ) Chloride (D) Magnesium
Ans: C
18. In Aquatic systems the depth at which the rate of Oxygen production by photosynthesis balances the rate of oxygen consumption by respiration is known as
(A) Depth of super saturation
(B) Oxy minima layer
(C )Thermocline
(D) Compensation depth
Ans: D
19. A cold current flowing southward along the west coast of Greenland and Canada is referred as
(A) Current of Greenland (B) Labrador current
(C) Canadian current (D) Kuroshio current
Ans: B
20. The brushes of generator are made up of
(A) rubber compound (B) metal compound
(C) plastic compound (D) carbon compound
Ans: D
21. Which part of SONAR is fitted in the underwater region of hull of a boat?
(A) transmitter (B) transducer
(C) recorder (D) receiver
Ans: B
22. The function of transducer of echo sounder is
(A) to produce electrical pulses
(B) to amplify the weak signals
(C) to display the processed signals
(D) to convert electrical energy in to sound energy and vice versa
Ans: D
23. When the average log-length (L) is plotted against the log weight (W)?
(A) A parabolic curve is obtained
(B) A straight line is obtained
(C) A sigmoid curve is obtained
(D) A polygon is obtained
Ans: B
24. Fish larvae with yolk absorbed are called
(A) Hatchlings (B) Prolarvae
(C ) Fry (D) Fingerlings
Ans: C
25. The term ‘eyed-ova’ refers to the developing eggs of
(A) Schizothorax sp (B) Salmo sp
(C) Tor sp (D) Schizothoraichthy sp
Ans: B
26. Food Quotient is also known as
(A) Food Absorption Rate (B) Food Conversion Rate
(C) Food Consumption Rate (D) Food Assimilation Rate
Ans: B
27. Ponderal Index is another term for
(A) Coefficient of maturity (B) Food Quotient
(C) Growth Factor (D) Condition Factor
Ans: D
28. ‘Glochidium’ is the larva of
(A) Eel (B) Prawn
(C) Crab (D) Bivalve
Ans: D
29. Based on the distribution of yolk, eggs of cartilaginous and bony fishes are classified as
(A) Oligolecithal (B) Isolecithal
(C ) Telolecithal (D) Centrolecithal
Ans: C
30. Blue revolution is related with:
(A) Crops (B) Energy source
(C) Fish (D) Oilseeds
Ans: C
31. Fish which pluck scales from other fishes and ingest them are called
(A) Carcinophagus (B) Malacophagus
(C ) Lepidophagus (D) Copraphagus
Ans: C
32. Modified anal fin is
(A) Papilla (B) Clasper
(C ) Gonopodium (D) Ovipositor
Ans: C
33. Placoid scales are a characteristic feature of
(A) Dipnoi (B) Agnatha
(C ) Elasmobranch (D) Teleost
Ans: C
34. Maximum landing of Lobster is reported from
(A) North—East coast (B) North-West coast
(C) South—East coast (D) South-West coast
Ans: B
35. Which species dominates in the lobster fishery along north-west coast of India?
(A) Panulirus homarus
(B) Panulirus polyphagus
(C) Panulirus ornatus
(D) Panulirus versicolor
Ans: B
36. Longlines are the gears used in
(A) Tuna Fishery (B) Prawn Fishery
(C) Sardine Fishery (D) Sole Fishery
Ans: A
37. About 98% 0f the landings of mackerels is supported by the
(A) West coast - Marine fishery (B) Riverine fishery
(C) Lake fishery (D) East Coast -Marine fishery
Ans: A
38. The use of plants that accumulate the pollutants for bioremediation in aquaculture systems is
(A) Biodegradation (B) Phytoremediation
(C) Probiotics (D) Bioconversion
Ans: B
39. Which of the following occupies the deltaic area of Sundarbans?
(A) Godavary Estuary
(B) Mahanadi Estuary
(C ) Hooghly- Matlah Estuary
(D) Mandovi- Zuari Estuary
Ans: C
40. ‘Wular Lake is' situated in
(A) Jammu and Kashmir (B) Sikkim (C) Garhwal (D) Himachal Pradesh
Ans: A
41. Mullets are estuaries fishes of the family
(A) Nemipteridae (B) Panuliridae
(C) Penaeidae (D) Mugilidae
Ans: D
42. The addition of salt to freshwater
(A) elevates its freezing point
(B) lowers its freezing point
(C) does not alters freezing point
(D) decrease density
Ans: B
43. The regular pattern of one high tide and one low tide each day in coastal areas is referred to as
(A) semi diurnal tide (B) diurnal tide
(C) semi diurnal mixed type (D) flood tide
Ans: B
44. In oceans, the region where water density increases relatively rapidly with depth are termed as
(A) thermocline (B) barocline
(C ) pycnocline (D) gyre
Ans: C
45. The seismic waves are caused in oceans by
(A) wind blow over ocean
(B) upwelling
(C ) volcanic eruptions
(D) fish shoal movements
Ans: C
46. Longitudinal waves transmit energy
(A) only through solids
(B) only through liquid
(C ) through solid, liquid and gas
(D) only through gas
Ans: C
47. The fire caused due to combustible metals such as Magnesium, Titanium and sodium is called
(A) Class ‘D’ Fire ' (B) Class ‘C’ Fire
(C) Class ‘B’ Fire ' (D) Class ‘A’ Fire
Ans: A
48. The dry chemical fire extinguishing agent affective on fire due to fats and vegetable oils is
(A) Carbon dioxide (B) Water
(C ) Sodium bicarbonate (D) Foam
Ans: C
49. Fire on the objects that produce ash when burned is classified under
(A) Class ‘A’ fire (B) Class ‘B’ fire
(C) Class ‘C’ fire (D) Class ‘D’ fire
Ans: A
50. The allowable drinking water limit per person in Life raft is
(A) 5 Litres (B) 3 Litres (C) 2 Litres (D) 0.5 Litres
Ans: D
(A) Pressure developed during power stroke
(B) Total pressure
(C) Mean effective pressure
(D) Volume of the cylinder at BDC
Ans: C
2. ____________is the device that is used to reduce the sound of the engine, which is provided between exhaust manifold and exhaust pipe
(A) Inlet manifold
(B) Silencer
(C) Decompression valve
(D) Air filter
Ans: B
3.The compression ratio of diesel engine values from
(A) 16:1 to 20:1
(B) 20:1 to 25:1
(C) 25:1 to 30:1
(D) 30:1 to 40:1
Ans: A
4. The mesh prescribed for the cod end of shrimp trawls is
(A) Diamond mesh (B) Square mesh
(C) Hexagonal mesh (D) Octagonal mesh
Ans: B
5. To control over fishing in the coastal region, the gears often banned from specified inshore areas are
(A) Shore seines and cast nets
(B) Gill nets and dip nets
(C) Purse seines and trawls
(D) Long lines and dip nets
Ans: C
6. Over exploitation fishery resources can be reduced through
(A) Selective fishing
(B) Dynamite fishing
(C) Indiscriminate fishing
(D) Fishing in corals
Ans: A
7. The part of echosounder, which convert the electrical energy in to sound energy and vice versa is
- Transmitter
- Transducer
- Recorder
- Receiver
8. The transducer of Net sonde is fitted on the _________ of trawl net
(A) Cod end (B) Foot rope
(B) Foot rope
(C) Head rope
(D) Wing
Ans: C
9. Marine Turtles are endangered species which are protected under schedule I of _________ act.
(A) TED act (B) BRD act (C) MFRA (D) Wild Life Protection act
Ans: D
10. The process by which the burnt gases from the cylinder is pushed away by the fresh charge of air of next cycle is called
(A) Suction (B) Exhaust
(C ) Scavenging (D) Super changing
Ans: C
11. Major overhauling of a marine diesel engine is advice-able after
(A) 100 hrs of running
(B) 250 hrs of running
(C) 3000 hrs of running
(D) 6000 hrs of running
Ans: D
12. A unit in the electrical system, which changes voltages from high to low and from low to high is known as
(A) Alternator (B) Transformer
(C) Transducer (D) Cell
Ans: B
13. The velocity of sound wave in water is
(A) 1500 m/min (B) 1500 m/sec
(C) 1500 Km/min (D) 1500 Km/sec
Ans: B
14. The length of the fish corresponding to the zero increment is called as
(A) Asymptotic length
(B) Arbitrary origin of growth
(C) Growth coefficient
(D) Initial condition parameter
Ans: A
15. In seawater a combination of high salinity and high density results in
(A) upwelling
(B) high temperature
(C) temperature optima
(D) low temperature
Ans: B
16. The average sea temperature is in the range of _____ excluding the shore and shallow water and extremes of hottest and coldest parts
(A) 30-35°C (B) 35-40°C
(C) 20-30°C (D) 25-30°C
Ans: A
17. Which chemical element constitutes the major portion of seawater?
(A) Sodium (B) Sulphate
(C ) Chloride (D) Magnesium
Ans: C
18. In Aquatic systems the depth at which the rate of Oxygen production by photosynthesis balances the rate of oxygen consumption by respiration is known as
(A) Depth of super saturation
(B) Oxy minima layer
(C )Thermocline
(D) Compensation depth
Ans: D
19. A cold current flowing southward along the west coast of Greenland and Canada is referred as
(A) Current of Greenland (B) Labrador current
(C) Canadian current (D) Kuroshio current
Ans: B
20. The brushes of generator are made up of
(A) rubber compound (B) metal compound
(C) plastic compound (D) carbon compound
Ans: D
21. Which part of SONAR is fitted in the underwater region of hull of a boat?
(A) transmitter (B) transducer
(C) recorder (D) receiver
Ans: B
22. The function of transducer of echo sounder is
(A) to produce electrical pulses
(B) to amplify the weak signals
(C) to display the processed signals
(D) to convert electrical energy in to sound energy and vice versa
Ans: D
23. When the average log-length (L) is plotted against the log weight (W)?
(A) A parabolic curve is obtained
(B) A straight line is obtained
(C) A sigmoid curve is obtained
(D) A polygon is obtained
Ans: B
24. Fish larvae with yolk absorbed are called
(A) Hatchlings (B) Prolarvae
(C ) Fry (D) Fingerlings
Ans: C
25. The term ‘eyed-ova’ refers to the developing eggs of
(A) Schizothorax sp (B) Salmo sp
(C) Tor sp (D) Schizothoraichthy sp
Ans: B
26. Food Quotient is also known as
(A) Food Absorption Rate (B) Food Conversion Rate
(C) Food Consumption Rate (D) Food Assimilation Rate
Ans: B
27. Ponderal Index is another term for
(A) Coefficient of maturity (B) Food Quotient
(C) Growth Factor (D) Condition Factor
Ans: D
28. ‘Glochidium’ is the larva of
(A) Eel (B) Prawn
(C) Crab (D) Bivalve
Ans: D
29. Based on the distribution of yolk, eggs of cartilaginous and bony fishes are classified as
(A) Oligolecithal (B) Isolecithal
(C ) Telolecithal (D) Centrolecithal
Ans: C
30. Blue revolution is related with:
(A) Crops (B) Energy source
(C) Fish (D) Oilseeds
Ans: C
31. Fish which pluck scales from other fishes and ingest them are called
(A) Carcinophagus (B) Malacophagus
(C ) Lepidophagus (D) Copraphagus
Ans: C
32. Modified anal fin is
(A) Papilla (B) Clasper
(C ) Gonopodium (D) Ovipositor
Ans: C
33. Placoid scales are a characteristic feature of
(A) Dipnoi (B) Agnatha
(C ) Elasmobranch (D) Teleost
Ans: C
34. Maximum landing of Lobster is reported from
(A) North—East coast (B) North-West coast
(C) South—East coast (D) South-West coast
Ans: B
35. Which species dominates in the lobster fishery along north-west coast of India?
(A) Panulirus homarus
(B) Panulirus polyphagus
(C) Panulirus ornatus
(D) Panulirus versicolor
Ans: B
36. Longlines are the gears used in
(A) Tuna Fishery (B) Prawn Fishery
(C) Sardine Fishery (D) Sole Fishery
Ans: A
37. About 98% 0f the landings of mackerels is supported by the
(A) West coast - Marine fishery (B) Riverine fishery
(C) Lake fishery (D) East Coast -Marine fishery
Ans: A
38. The use of plants that accumulate the pollutants for bioremediation in aquaculture systems is
(A) Biodegradation (B) Phytoremediation
(C) Probiotics (D) Bioconversion
Ans: B
39. Which of the following occupies the deltaic area of Sundarbans?
(A) Godavary Estuary
(B) Mahanadi Estuary
(C ) Hooghly- Matlah Estuary
(D) Mandovi- Zuari Estuary
Ans: C
40. ‘Wular Lake is' situated in
(A) Jammu and Kashmir (B) Sikkim (C) Garhwal (D) Himachal Pradesh
Ans: A
41. Mullets are estuaries fishes of the family
(A) Nemipteridae (B) Panuliridae
(C) Penaeidae (D) Mugilidae
Ans: D
42. The addition of salt to freshwater
(A) elevates its freezing point
(B) lowers its freezing point
(C) does not alters freezing point
(D) decrease density
Ans: B
43. The regular pattern of one high tide and one low tide each day in coastal areas is referred to as
(A) semi diurnal tide (B) diurnal tide
(C) semi diurnal mixed type (D) flood tide
Ans: B
44. In oceans, the region where water density increases relatively rapidly with depth are termed as
(A) thermocline (B) barocline
(C ) pycnocline (D) gyre
Ans: C
45. The seismic waves are caused in oceans by
(A) wind blow over ocean
(B) upwelling
(C ) volcanic eruptions
(D) fish shoal movements
Ans: C
46. Longitudinal waves transmit energy
(A) only through solids
(B) only through liquid
(C ) through solid, liquid and gas
(D) only through gas
Ans: C
47. The fire caused due to combustible metals such as Magnesium, Titanium and sodium is called
(A) Class ‘D’ Fire ' (B) Class ‘C’ Fire
(C) Class ‘B’ Fire ' (D) Class ‘A’ Fire
Ans: A
48. The dry chemical fire extinguishing agent affective on fire due to fats and vegetable oils is
(A) Carbon dioxide (B) Water
(C ) Sodium bicarbonate (D) Foam
Ans: C
49. Fire on the objects that produce ash when burned is classified under
(A) Class ‘A’ fire (B) Class ‘B’ fire
(C) Class ‘C’ fire (D) Class ‘D’ fire
Ans: A
50. The allowable drinking water limit per person in Life raft is
(A) 5 Litres (B) 3 Litres (C) 2 Litres (D) 0.5 Litres
Ans: D
51. The signal flag to be hoisted during man overboard at sea is
(A) OSCAR (B) ALFA
(C) TANGO (D) INDIA
Ans: A
52. Which of the following log works with the principle of changing the frequency of reflected sound signal?
(A) Impeller log (B) Doppler log
(C) Electromagnetic log (D) Patent log
Ans: B
53. Which of the following equipment works independent of earth’s magnetism?
(A) Gyrocompass
(B) Echo sounder
(C ) Speed and distance log
(D) Magnetic compass
Ans: A
54. The Rocket Parachute flame used for distress signalling at sea should have the luminous intensity of
(A) 300 Candles (B) 3000 Candles
(C) 30,000 Candles (D) 3,00,000 Candles
Ans: C
55. The safe water marks are used to indicate
(A) Safe Navigable water south and north to the mark
(B ) Safe Navigable water all around the mark
(C) Safe Navigable water all around the danger
(D) Safe Navigable water in the channel
Ans: B
56. The Electronic equipment used on board a vessel to steer the vessel without handling of steering continuous wheel manually is called
(A) Gyrocompsss
(B) Radar
(C ) Autopilot
(D) Global positioning system
Ans: C
57. The single letter flag hoisted to express affirmative response in a vessel is
(A) Alfa flag (B) Bravo flag
(C ) Charlie flag (D) Delta flag
Ans: C
58. A compass without variation and deviation error is called
(A) Magnetic Compass (B) Gyro Compass
(C) Wet Card Compass (D) Dry Card Compass
Ans: B
59. Insect infestation of dried fish can occur during
(A) Drying alone (B) Storage alone
(C ) Drying and storage (D) Packing and storage
Ans: C
60. Moulds can grow on the dried fish if the relative humidity is above _____
In the storage area.
(A) 60% (B) 65%
(C) 70% (D) 75%
Ans: D
61. Machine used for sealing retort pouch
(A) Double seamer
(B) Heat band sealing machine
(C) Vacuum packing machine
(D) Polythene bag sealing machine
Ans: B
62. Which is the second major component in fish muscle?
(A) Ash (B) Fat
(C ) Protein (D) Water
Ans: C
63. Which fish has more water content in their flesh?
(A) Sardine (B) Mackerel
(C) Tuna (D) Bombay duck
Ans: D
64. Freezer burn is a condition of frozen fish which indicates
(A) discolouration
(B) protein denaturation
(C) fat oxidation
(D) dessication
Ans: D
65. Agar agar is prepared from
(A) brown seaweeds (B) red seaweeds
(C) green seaweeds (D) none of the above
Ans: B
66. Retort pouch consists of following layers from outer to inner side.
(A) PE/ aluminium foil/ PP
(B) PP/PE/aluminium foil
(C) Aluminium foil/PP/PE
(D) PE/PP/aluminium foil
Ans: A
67. Cans for packing fish are coated inside with
(A) Vinyl lacquers
(B) Acid resistant lacquers
(C ) Sulphur resistant lacquers
(D) Phenolic enamels
Ans: C
68. The oceanic current phenomenon which leads to unusual cooling of the water off the Peruvian coast associated with the weather phenomenon opposite to EL Nino is
(A) Somali current
(B) La Nina
(C) Agulhas current
(D) Cold Californian current
Ans: B
69. The process of surface water being forced downward due to enhanced density at the point of convergence is known as
(A) upwelling
(B) caballing
(C) vacuum dip
(D) downward current
Ans: B
70. Cyclonically rotating, low pressure weather systems that form over the tropical oceans with an intense wind speed range of 60-120 km/hr are generally termed as
(A) Hurricanes (B) Typhoons
(C ) Tropical cyclones (D) Depression
Ans: C
71. The average sea-level atmospheric pressure is
(A) 780 mm of Hg
(B) 76 mm of Hg
(C) 7600 mm of Hg
(D) 7.6 mm of Hg
Ans: A
72. The following pre condition is not an essential pre requisite for the formation of tropical cyclone
(A) Sea surface temperature higher than 27°C
(B) Presence of coriolis force enough to create a cyclonic vortex
(C) A pre-existing weak low pressure area
(D) Rainfall in nearby regions, of land
Ans: D
73. The average temperature of cooling of cans after thermal processing is
(A) 30°C (B) 35 °C
(C) 40°C (D) 50 °C
Ans: B
74. In fishes, whirling disease is caused by
(A) Hexamita sp (B) Myxoma cerebralis
(C) Mycobacterium sp (D) Flevobacterium columnaris
Ans: B
75. Filamentous fungus that causes gill net is
(A) Saprolegnia sp (B) Branchiomyces sp
(C) Lagenidium sp . (D) Fussrium sp
Ans: B
76. In dry pack canned shrimp ____ is used to prevent discoloration of meat
77. The process of removal of air from the contents and the head space of a filled can is called as
(A) Sucking (B) Cooling (C) Exhausting (D) Heating
Ans: C
78. During heating, the fish releases around ____% of the water from their body
(A) 5-10 (B) 10-15 (C ) 15-30 (D) 30-45
Ans: C
79. As per Indian standards the concentration of filling brine on opening the can is
(A) 3% NaCl (B) 5% NaCl
(C) 6% NaCl (D) 10% NaCl
Ans: A
80. The fish that is considered an egg scatterer laying adhesive egg is
(A) Angelfish (B) Gold fish
(C) Killi fish (D) Molly fish
Ans: B
81. The phenomenon of sex reversal is commonly noticed in
(A) Sword tail (B) Zebra fish
(C) Guppy fish (D) Gold fish
Ans: A
82. The scientific name of Rosy barb which originated in India is
(A) Rashora damiconius (B) Puntius Jasciatus
(C) Puntius arulis (D)Puntius covchonius
Ans: D
83. Labeo calbasu is introduced in composite fish culture as
(A) Bottom dwelling fish
(B) Column feeders
(C) Surface feeder
(D) Larvivorous fish that feed on insect
Ans: A
84. The recommended dosage of urea and single superphosphate in fish pond preparation at fortnight interval application is
(A) 10 and 15 kg/ha (B) 1 and 5 kg/ha
(C) 20 and 25 kg/ha (D) 40 and 55 kg/ha
Ans: A
85. Dropsy disease causes this specific clinical sign in fish
(A) White spots on the body
(B) Swollen abdomen and erect scale
(C) Erratic swimming
(D) Disintegration of fins
Ans: B
86. The most widely used organic fertilizer for fish culture septeum is
(A) Poultry manure (B) Pig dung
(C ) Cow dung (D) Goat manure
Ans: C
87. At the start of the season, lime should be applied to the pond to improve the health of fishes because
(A) Kills all the parasites present in the pend
(B) Acts as a fertilizer
(C) Reduces feed requirement
(D) decreases the FCR
Ans: A
88. The primary producers that utilizes carbon compounds for the synthesis of food are called
(A) phototrophs
(B) Chemotrophs
(C) gross primary producers
(D) net primary producers
Ans: B
89. The plankton with chlorophyll is called
(A) Algae (B) zoobenthos
(C) Zoo Plankton (D) phytoplankton
Ans: D
90. The definition, “Maintaining a group of aquatic animals in isolation with no direct or indirect contact with other animals for a specified length of time, and if appropriate testing and treatment” pertains to
(A) Treatment
(B) Specific pathogen free (SPF)
(C ) Quarantine
(D) Biosecurity
Ans: C
91. The ideal material of construction of Fishing boat exceeding 50 m length is
(A) Wood
(B) Steel
(C) FRP
(D) Ferrocement
Ans: B
92. When bigger FRP boats are built they require
(A) Top weight
(B) Ballast
(C) No additional weight
(D) Weight removal
Ans: B
93. In the gill net selectivity equation lc = Km ‘Ic’ denotes
(A) Stretched mesh size of the gill net
(B) Proportionality co-efficient
(C ) Mean selection length
(D) Maximum length of fish caught in the gill net
Ans: C
94. Trawl eye or net sonde is fixed on the
(A) Head rope of trawl
(B) Foot rope of trawl
(C) Cod end-of trawl
(D) Belly of the trawl
Ans: A
95. The centre of the wire rope used in fishing has
(A) Lay (B) Steel
(C) Strand (D) Core
Ans: D
96. Ferrocement boat could be heavier than wooden equivalent by
(A) 15%
(B) 25%
(C) 35%
(D) 50%
Ans: A
97. Power block is found in
(A) Trawler (B) Purse seiner
(C) Gill neter (D) Long liner
Ans: B
98. The breaking force per unit linear density is called
(A) Tensile strength
(B) Tenacity
(C) Breaking load
(D) Lead at rupture
Ans: B
99. A structure commonly used in trawlers, which replaces gallows, mast derrick and stays is called as
(A) Net harler
(B) Fair leads
(C) Rollers
(D) Gantries
Ans: D
100. Owing to knotting process, the breaking strength of netting yarns will
(A) increase
(B) remains unaltered
(C) decrease
(D) increase too much
Ans: D
(A) OSCAR (B) ALFA
(C) TANGO (D) INDIA
Ans: A
52. Which of the following log works with the principle of changing the frequency of reflected sound signal?
(A) Impeller log (B) Doppler log
(C) Electromagnetic log (D) Patent log
Ans: B
53. Which of the following equipment works independent of earth’s magnetism?
(A) Gyrocompass
(B) Echo sounder
(C ) Speed and distance log
(D) Magnetic compass
Ans: A
54. The Rocket Parachute flame used for distress signalling at sea should have the luminous intensity of
(A) 300 Candles (B) 3000 Candles
(C) 30,000 Candles (D) 3,00,000 Candles
Ans: C
55. The safe water marks are used to indicate
(A) Safe Navigable water south and north to the mark
(B ) Safe Navigable water all around the mark
(C) Safe Navigable water all around the danger
(D) Safe Navigable water in the channel
Ans: B
56. The Electronic equipment used on board a vessel to steer the vessel without handling of steering continuous wheel manually is called
(A) Gyrocompsss
(B) Radar
(C ) Autopilot
(D) Global positioning system
Ans: C
57. The single letter flag hoisted to express affirmative response in a vessel is
(A) Alfa flag (B) Bravo flag
(C ) Charlie flag (D) Delta flag
Ans: C
58. A compass without variation and deviation error is called
(A) Magnetic Compass (B) Gyro Compass
(C) Wet Card Compass (D) Dry Card Compass
Ans: B
59. Insect infestation of dried fish can occur during
(A) Drying alone (B) Storage alone
(C ) Drying and storage (D) Packing and storage
Ans: C
60. Moulds can grow on the dried fish if the relative humidity is above _____
In the storage area.
(A) 60% (B) 65%
(C) 70% (D) 75%
Ans: D
61. Machine used for sealing retort pouch
(A) Double seamer
(B) Heat band sealing machine
(C) Vacuum packing machine
(D) Polythene bag sealing machine
Ans: B
62. Which is the second major component in fish muscle?
(A) Ash (B) Fat
(C ) Protein (D) Water
Ans: C
63. Which fish has more water content in their flesh?
(A) Sardine (B) Mackerel
(C) Tuna (D) Bombay duck
Ans: D
64. Freezer burn is a condition of frozen fish which indicates
(A) discolouration
(B) protein denaturation
(C) fat oxidation
(D) dessication
Ans: D
65. Agar agar is prepared from
(A) brown seaweeds (B) red seaweeds
(C) green seaweeds (D) none of the above
Ans: B
66. Retort pouch consists of following layers from outer to inner side.
(A) PE/ aluminium foil/ PP
(B) PP/PE/aluminium foil
(C) Aluminium foil/PP/PE
(D) PE/PP/aluminium foil
Ans: A
67. Cans for packing fish are coated inside with
(A) Vinyl lacquers
(B) Acid resistant lacquers
(C ) Sulphur resistant lacquers
(D) Phenolic enamels
Ans: C
68. The oceanic current phenomenon which leads to unusual cooling of the water off the Peruvian coast associated with the weather phenomenon opposite to EL Nino is
(A) Somali current
(B) La Nina
(C) Agulhas current
(D) Cold Californian current
Ans: B
69. The process of surface water being forced downward due to enhanced density at the point of convergence is known as
(A) upwelling
(B) caballing
(C) vacuum dip
(D) downward current
Ans: B
70. Cyclonically rotating, low pressure weather systems that form over the tropical oceans with an intense wind speed range of 60-120 km/hr are generally termed as
(A) Hurricanes (B) Typhoons
(C ) Tropical cyclones (D) Depression
Ans: C
71. The average sea-level atmospheric pressure is
(A) 780 mm of Hg
(B) 76 mm of Hg
(C) 7600 mm of Hg
(D) 7.6 mm of Hg
Ans: A
72. The following pre condition is not an essential pre requisite for the formation of tropical cyclone
(A) Sea surface temperature higher than 27°C
(B) Presence of coriolis force enough to create a cyclonic vortex
(C) A pre-existing weak low pressure area
(D) Rainfall in nearby regions, of land
Ans: D
73. The average temperature of cooling of cans after thermal processing is
(A) 30°C (B) 35 °C
(C) 40°C (D) 50 °C
Ans: B
74. In fishes, whirling disease is caused by
(A) Hexamita sp (B) Myxoma cerebralis
(C) Mycobacterium sp (D) Flevobacterium columnaris
Ans: B
75. Filamentous fungus that causes gill net is
(A) Saprolegnia sp (B) Branchiomyces sp
(C) Lagenidium sp . (D) Fussrium sp
Ans: B
76. In dry pack canned shrimp ____ is used to prevent discoloration of meat
- Parchment paper
- Poly film
- Aluminum foil
- Paper board
77. The process of removal of air from the contents and the head space of a filled can is called as
(A) Sucking (B) Cooling (C) Exhausting (D) Heating
Ans: C
78. During heating, the fish releases around ____% of the water from their body
(A) 5-10 (B) 10-15 (C ) 15-30 (D) 30-45
Ans: C
79. As per Indian standards the concentration of filling brine on opening the can is
(A) 3% NaCl (B) 5% NaCl
(C) 6% NaCl (D) 10% NaCl
Ans: A
80. The fish that is considered an egg scatterer laying adhesive egg is
(A) Angelfish (B) Gold fish
(C) Killi fish (D) Molly fish
Ans: B
81. The phenomenon of sex reversal is commonly noticed in
(A) Sword tail (B) Zebra fish
(C) Guppy fish (D) Gold fish
Ans: A
82. The scientific name of Rosy barb which originated in India is
(A) Rashora damiconius (B) Puntius Jasciatus
(C) Puntius arulis (D)Puntius covchonius
Ans: D
83. Labeo calbasu is introduced in composite fish culture as
(A) Bottom dwelling fish
(B) Column feeders
(C) Surface feeder
(D) Larvivorous fish that feed on insect
Ans: A
84. The recommended dosage of urea and single superphosphate in fish pond preparation at fortnight interval application is
(A) 10 and 15 kg/ha (B) 1 and 5 kg/ha
(C) 20 and 25 kg/ha (D) 40 and 55 kg/ha
Ans: A
85. Dropsy disease causes this specific clinical sign in fish
(A) White spots on the body
(B) Swollen abdomen and erect scale
(C) Erratic swimming
(D) Disintegration of fins
Ans: B
86. The most widely used organic fertilizer for fish culture septeum is
(A) Poultry manure (B) Pig dung
(C ) Cow dung (D) Goat manure
Ans: C
87. At the start of the season, lime should be applied to the pond to improve the health of fishes because
(A) Kills all the parasites present in the pend
(B) Acts as a fertilizer
(C) Reduces feed requirement
(D) decreases the FCR
Ans: A
88. The primary producers that utilizes carbon compounds for the synthesis of food are called
(A) phototrophs
(B) Chemotrophs
(C) gross primary producers
(D) net primary producers
Ans: B
89. The plankton with chlorophyll is called
(A) Algae (B) zoobenthos
(C) Zoo Plankton (D) phytoplankton
Ans: D
90. The definition, “Maintaining a group of aquatic animals in isolation with no direct or indirect contact with other animals for a specified length of time, and if appropriate testing and treatment” pertains to
(A) Treatment
(B) Specific pathogen free (SPF)
(C ) Quarantine
(D) Biosecurity
Ans: C
91. The ideal material of construction of Fishing boat exceeding 50 m length is
(A) Wood
(B) Steel
(C) FRP
(D) Ferrocement
Ans: B
92. When bigger FRP boats are built they require
(A) Top weight
(B) Ballast
(C) No additional weight
(D) Weight removal
Ans: B
93. In the gill net selectivity equation lc = Km ‘Ic’ denotes
(A) Stretched mesh size of the gill net
(B) Proportionality co-efficient
(C ) Mean selection length
(D) Maximum length of fish caught in the gill net
Ans: C
94. Trawl eye or net sonde is fixed on the
(A) Head rope of trawl
(B) Foot rope of trawl
(C) Cod end-of trawl
(D) Belly of the trawl
Ans: A
95. The centre of the wire rope used in fishing has
(A) Lay (B) Steel
(C) Strand (D) Core
Ans: D
96. Ferrocement boat could be heavier than wooden equivalent by
(A) 15%
(B) 25%
(C) 35%
(D) 50%
Ans: A
97. Power block is found in
(A) Trawler (B) Purse seiner
(C) Gill neter (D) Long liner
Ans: B
98. The breaking force per unit linear density is called
(A) Tensile strength
(B) Tenacity
(C) Breaking load
(D) Lead at rupture
Ans: B
99. A structure commonly used in trawlers, which replaces gallows, mast derrick and stays is called as
(A) Net harler
(B) Fair leads
(C) Rollers
(D) Gantries
Ans: D
100. Owing to knotting process, the breaking strength of netting yarns will
(A) increase
(B) remains unaltered
(C) decrease
(D) increase too much
Ans: D
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