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Kerala PSC SCIENTIFIC OFFICER (PHYSICS) (Police (Forensic Science Laboratory)) Previous Question Paper – 169/2023

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Post NameSCIENTIFIC OFFICER (PHYSICS) (Police (Forensic Science Laboratory))
Question Paper Code169/2023
Category Code036/2023
Date of Test13 September 2023
Medium of QuestionENGLISH
Exam TypeOMR Examination
Total Questions100
1
____________ is a fibre cum oilseed crop of India.
Answer
C. Flax
2
The nutrient with specific influence on urease enzyme activity is
Answer
A. Nickel
3
Botanically sesamum belongs to _____________ family.
Answer
D. None of these
4
Photosynthetically active radiation is measured using
Answer
B. Quantum sensor
5
One ha cm of water is equal to __________ cu.m.
Answer
A. 100
6
At IW/CPE ratio of 1.0, at 50 mm depth of irrigation water and mean per day evaporation of 5 mm, irrigation interval is __________ days.
Answer
C. 10
7
The herbicide used for the selective drying of panicles of weedy rice is
Answer
B. Glufosinate ammonium
8
Scientific name of nut grass is
Answer
C. Cyperus rotundus
9
multistoreyed cropping is an example for
Answer
A. Spatial annidation
10
The yields of cassava and cowpea under intercropping system were recorded as 20 t ha–1 and 800 kg ha–1 respectively and the per hectare sole crop yields were 40 t ha–1 in cassava and 1600 kg ha–1 in cowpea. The land Equivalent Coefficient (lEC) of the system is
Answer
B. 0.250
11
The following equation in nitrification process is mediated by + + 2NH4 + 3O2 → 2HNO2 + 2H + 2H2O
Answer
B. Nitrosomonas
12
The sulphidic mineral present in acid sulphate soils of Kuttanad of Kerala is
Answer
A. Jarosite
13
The Neutralizing value (Nv) or Calcium Carbonate Equivalent
Answer
D. 100
14
The water that is retained in the soil between the water potential of –1/3 bar and –31 bars is known as
Answer
C. Capillary water
15
NPOP stands for
Answer
B. National Programme for Organic Production
16
Alkali or sodic soil is defined as a soil having a conductivity of the saturation extract
Answer
B. lesser than 4 dSm–1
17
The clay minerals (2 : 2 or 2 : 1 : 1) characterized with silicates of magnesium with some iron and aluminium belong to
Answer
C. Chlorite
18
The phenomenon slickenside found in which type of soil ?
Answer
A. vertisol
19
Whiptail symptom in cauliflower is due to the deficiency of
Answer
B. molybdenum
20
The Fertilizer Control Order came in to force in India in the year
Answer
C. 1957
21
Papaya mealy bug is
Answer
C. Paracoccus marginatus
22
The parapheromone used to attract curcurbit fruit fly to trap is
Answer
A. Cuelure
23
Parthenogenesis and viviparity are associated with
Answer
B. Aphids
24
Chrysocaris johnsoni, is the parasitoid of
Answer
B. Epilachna vigintioctopunctata
25
In rice, infestation by Orseolia oryzae results in
Answer
D. Silver shoot
26
Haemoglobin is found in the body fluid of
Answer
D. Chiranomids
27
Eri silk worms are reared on
Answer
A. Castor
28
The mechanism of resistance wherein the host plant exerts an adverse effect on the biology of insects is
Answer
C. Antibiosis
29
Trade name of chlorpyriphos is
Answer
A. Dursban
30
An egg parasitoid of rice stem borer is
Answer
B. Trichogramma japonicum
31
Statement i : Triazole fungicides interfere with ergosterol biosynthesis. Statement ii : Triazole fungicides exhibit translaminar movement.
Answer
A. Statement i and ii are correct
32
Phytoalexin produced in solanaceous plant is
Answer
D. Rishitin
33
A disease not favoured by acidic pH is
Answer
B. Common scab of potato
34
Match List — | with List — II: List -| List - Il 1. sSRNA virus i. Wound tumour virus 2. dsRNA virus ii. Cauliflower mosaic virus 3. SSDNA virus ili. Tobacco mosaic virus 4. dsDNA virus iv. Maize streak virus
Answer
B. 1-iii, 2-i, 3-iv, 4-ii
35
Suberin degrading enzymes are produced by
Answer
C. Fusarium solani
36
Spores of Puccinia graminis tritici seen in barberry 1. Basidiospores 2. Aeciospores 3. Teliospores 4. Uredospores 5. Pycniospores
Answer
C. 2and5
37
An example of a bacterial toxin is
Answer
D. Tab toxin
38
Rice variety resistant to udbatta disease is
Answer
C. deepthi
39
Pigeon pea sterility mosaic virus transmitted by
Answer
A. mite
40
Example of a polyetic disease is
Answer
B. Citrus tristeza
41
Texas cytoplasm of male sterility is utilized in
Answer
B. maize
42
Who is the father of Green Revolution ?
Answer
B. Norman Borloug
43
Cultivated wheat Triticum aestivum is
Answer
C. Hexaploid
44
______________ is an ex situ conservation method.
Answer
A. Seed Bank
45
_____________ is a physical mutagen.
Answer
B. X-rays
46
Father of hybrid rice is
Answer
A. yuan long Ping
47
The superiority of F Hybrid over both parents is termed as
Answer
A. Heterosis
48
most expensive spice in the world is
Answer
D. Saffron
49
Coconut breeding first started in the world in
Answer
C. Neeleshwaram
50
Crossing over occurs in __________ during meiosis.
Answer
A. Pachytene
51
Identify the incorrect statement.
Answer
B. Seed Inspectors are empowered to draw samples of seeds of any unnotified varieties from any seed sale points.
52
The minimum germination percentage of Guinea grass seed is
Answer
B. 20%
53
For the purpose of field inspection, the unit of certification i. Should not exceed ten hectares ii. Total area specified should be under one variety and not separated by more than 50 m iii. Sowing date within the specified seed production field should not differ more than 7 days iv. The crop raised can be mixed crop or inter crop or ratoon crop Find the correct answer :
Answer
A. Statements i, ii, iii are correct and statement iv is wrong
54
Incertified class soybean seed production, field should be isolated from the source of contaminants for a distance of
Answer
D. 3 m
55
Expansion for PPv and FRA, 2001 is
Answer
A. Protection of Plant varieties and Farmer’s Rights Act, 2001
56
manner of seed packing, fastening and scaling the samples for seed analysis is given in
Answer
D. Schedule I Sub Schedule (Iv) of Seed Control Order, 1983
57
Number of plants to be observed per count in the brinjal seed production field inspection is
Answer
A. 100 plants
58
The minimum physical purity percentage for certified sesame seed is
Answer
A. 97%
59
Which one is not a function of Central Seed Testing lab ?
Answer
C. Carry out the seed analysis work of each state as per the prescribed manner
60
The colour of foundation seed tag is
Answer
B. White
61
Which of the following is not a tropical fruit ?
Answer
C. Apple
62
vivipary is seen in
Answer
A. Jackfruit
63
Spacing for high density planting in Banana is
Answer
Question Cancelled
64
In which of the following medicinal plants, the economical plant part used is root ?
Answer
C. vetiver
65
Which of the following statements is not correct ?
Answer
Question Cancelled
66
‘Keiki’ is related to which flower crop ?
Answer
B. Orchid
67
Which of the following statement is/are correct ? i. Training admits more light and air to the tree canopy. ii. Pruning regulates bearing in fruit crop. iii. Training remove criss-crossed branches.
Answer
A. Only i and ii
68
‘Forestero’ is a variety of which of the following plantation crop ?
Answer
A. Cocoa
69
Sorosis is the type of fruit in
Answer
B. Jackfruit
70
Which of the following is a quarantine post-harvest treatment for fruits/vegetables ?
Answer
B. Hot water treatment
71
metaxenia is observed in
Answer
C. Cucumber
72
Which among the following is a red fleshed seedless watermelon hybrid released from Kerala Agricultural University ?
Answer
D. Shonima
73
Heterostyly is present in
Answer
B. Brinjal
74
Which among the following is a dioecious vegetable ?
Answer
D. Both
75
Scientific name of cabbage is
Answer
B. Brassica oleraceae var capitata
76
Primitive sex form of curcurbits is
Answer
D. Hermaphrodite
77
Which among the following is often cross pollinated ?
Answer
B. Okra
78
__________ is a tomato variety released from Kerala Agricultural University suitable for rain shelter cultivation.
Answer
D. Akshaya
79
Optimum temperature for colour development in tomato ranges from
Answer
B. 21 – 24° C
80
Which among the following is a deep rooted vegetable ?
Answer
Question Cancelled
81
Which of the following statements is false regarding marginal utility ? i. marginal utility indicates price. ii. marginal utility decreases as the quantity of complementary goods with the consumer increases. iii. marginal utility is a function of supply. iv. marginal utility of substitutes decreases as the quantity of substitute goods with the consumer increases.
Answer
C. Only i, iii, iv
82
____________ defined marketing as a human activity directed at satisfying the needs and wants through exchange process.
Answer
B. Philip Kotler
83
Regulated markets are governed by i. market Committee ii. Farmer Producer Organisations iii. department of Agriculture iv. NABARd
Answer
A. Only i
84
Which one of the following is true regarding ardinal utility analysis ? i. Utility is measurable and quantifiable. ii. Utility is additive. iii. Utility can be measured in units called utils. iv. many economists criticized cardinal utility analysis as unrealistic.
Answer
D. All the above
85
_____________ have no place in representing wealth.
Answer
A. Free goods
86
___________ are those costs which are incurred for purchasing of farm inputs.
Answer
C. Explicit cost
87
Which of the following statements are true ? i. marketable surplus of non food crops are greater than food crops. ii. marketable surplus of food crops are greater than non food crops. iii. marketed surplus is less than marketable surplus in case of large farmers. iv. Estimation of marketable surplus helps in checking price fluctuations of agricultural commodities.
Answer
C. i, iii and iv only
88
Which of the following market conditions represents monopolistic competition ?
Answer
B. Seventy sellers selling different mango varieties in a market
89
Organic manure is an example of
Answer
B. derived demand
90
A pump set company follows ______________ segmentation while producing sophisticated pump set for large farmers.
Answer
C. demographic segmentation
91
Prof. Holden adopted an innovative method of spreading message of better quality corn seeds in USA are popularly known as
Answer
B. Seed Corn Trains
92
‘Extension Education’ taught at undergraduate level for the first time in 1950 in which of the following institutions ?
Answer
C. College of Agriculture, Calcutta University
93
In United States of America (USA), the meaning of the term ‘extension’ is conceptualized as Education while in India it is
Answer
D. Transfer of technology
94
Field day is a method of motivating people to adopt new practice by showing them what actually been achieved under field conditions, which of the following statements are correct with regard to Field day ? a. Participants can observe the benefits of the practice. b. Opportunity for farmers to socialize and acquaint with experts/scientists. c. Field days can be held frequently. d. does facilitate in-depth learning. e. Farmers can develop confidence help in spreading its wider application among farming community. Select the appropriate answer.
Answer
C. a, b and e are correct
95
A is assertion and R is reason, based on assertion and reason select the appropriate answer. A : Agri-tourism will create products like agri-shopping, culinary tourism, pick and own your tree/plot, bed and breakfast, pick and pay, bullock cart riding, camel riding, boating, fishing, herbal walk, rural games and health (ayurvedic) tourism etc. r : Hence Agri-Tourism means education through entertainment, seeing is believing, doing is learning. Select the appropriate answer : A) Both
Answer
A. and
96
A is assertion and R is reason, based on assertion and reason select the appropriate answer. A : Committee on doubling Farmers Income defined Agricultural Extension focusing on Empowerment, agricultural sub-sectors, agricultural value chain and entrepreneurship on sustainable basis. r : Because farmers in India today prefer to be empowered than offered merely a temporary succour and knowledge empowerment is vital to manage and exercise agriculture as an enterprise that generates targeted profits. Select the appropriate answer : A) Both
Answer
A. and
97
According to O. P. dahama and O. P. Bhatnagar an extension professional should possess the qualities viz., a. Extension professional should know his audience, objectives, message, channels, how to treat the message and his professional abilities and limitations. b. He should be interested in the welfare of his audience. c. He prepares himself a plan for communication and a plan for evaluation of results. d. Should have skills in selecting the message, selection and use of channels and collecting evidence of results. e. Should be aware of the results of his activities. Choose the correct answer :
Answer
C. a, b, c and d are correct
98
Statement I : In primitive and static societies, social mobility is restricted. Statement II : In a dynamic and progressive society, birth in a low status family debar a man to reach out high status. Choose the correct answer :
Answer
C. Statement – I is correct and Statement – II is incorrect
99
Please read the below statements : A. Replacement discontinuance is a decision to reject an idea in order to adopt a better idea that supersedes it. B. disenchantment is a decision to reject an idea as a result of dissatisfaction with its performance. Identify the correct statement.
Answer
A. Both
100
The degree to which an innovation is perceived as being better than the idea it supersedes is termed as
Answer
D. Relative advantage

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