| Post Name | Field Officer - Kerala State co Op Rubber Marketing Fedn Ltd |
|---|---|
| Question Paper Code | 136/2024/OL |
| Category Code | 439/2023 |
| Date of Test | 26 December 2024 |
| Exam Type | Online Examination |
| Total Questions | 100 |
1
The sequence of reactivity for the following halogen fluorides is
Answer
A. > > >
2
The hybridization of in and geometry of are respectively
Answer
D. and Square Pyramidal
3
As per molecular orbital theory, the bond order of nitrosonium ion and superoxide ion are respectively,
Answer
C. 3.00 and 1.50
4
Identify the correct statements from the following: i. Ions without noble gas configuration will have high charges at their surfaces and thus highly polarising. ii. The number of -OH groups present in pyrophosphoric acid and hypophosphorous acid are different. iii. Tl(1) compounds are more stable than Tl(III) compounds. iv. The polar diagrams do not represent the total wave function (ψ), but only the angular part of the wave function.
Answer
C. i, iii and iv are correct
5
Which of the following scientists provided experimental evidence that confirmed that electrons exhibit wave like properties as predicted by De Broglie?
Answer
A. Germer and Davisson
6
Which one of the following statement is not correct regarding boron and its compounds?
Answer
B. Metaboric acid is
7
Which of the following coordination compounds exhibit both ionization and linkage isomerism? i. ii. iii. iv.
Answer
B. i and ii
8
The product obtained when hydrogen peroxide is added to an acidified solution of a dichromate is
Answer
A. CrO(O₂)₂
9
The sum of the first three ionization energies is maximum for which of the following lanthanides
Answer
D. and
10
From the following complexes of Nickel, identify which are tetrahedral?
Answer
D. and
11
Reduction of potassium permanganate with aqueous produces
Answer
C. Tetraoxomanganate (V)
12
Biodegradable non persistent Pesticide which is considered as a neurotoxin that causes immediate paralysis to insects
Answer
D. Pyrethrin
13
The Resin Identification Codes or the ''Chasing arrows" triangle with recycling codes 3 & 4 are for the following
Answer
A. Poly Vinyl Chloride and Low Density Poly Ethylene
14
Storage of iron in the body is carried out by
Answer
B. Ferritin
15
Predominent metal present in the Reaction Centre of Photosystem II is
Answer
C. Mn
16
The metal carbonyls that does not obey EAN rule
Answer
B. V(CO)₆
17
Ozone and oxides of nitrogen are the principal constituents of
Answer
A. Photochemical Smog
18
Which among the following steps is not involved in the process of precipitation in gravimetric analysis?
Answer
B. Digestion
19
In a Scanning Electron Microscope the secondary electrons radiated back is collected at?
Answer
D. Anode
20
Which among the following stationary phases act as a strong acidic cation exchange resin
Answer
B. Sulphonated Polystyrene
21
Which of the following compounds show Norrish Type II reaction?
Answer
C. 4,4 Dimethyl 2-Pentanone
22
Arrange the following compounds in the order of decreasing reactivity towards electrophilic substitution reaction. i. Phenol ii. Toluene iii. Benzaldehyde iv. Aniline
Answer
A. iv>i>ii>iii
23
Select the incorrect statement among the following for reaction
Answer
D. The rate of reaction is independent of the concentration of nucleophile
24
How many of the following species are aromatic in nature?
Answer
B. 3
25
Among the following Z-Isomer is:
Answer
C. Alkene figure: upper substituents CH₃/H and lower substituents Br/Cl
26
Which among the following compound is formed when Acetone reacts with Methyl Magnesium bromide followed by hydrolysis?
Answer
A. tert-Butyl alcohol
27
The following reaction is an example of :
Answer
B. Claisen Schmidt Reaction
28
Oxidation of glucose with nitric acid in the presence of and as catalyst gives
Answer
A. Oxalic acid
29
Reaction of Sodium phenoxide with in alkaline medium gives
Answer
B. Salicylic Acid
30
Which of the following compounds is most reactive with anhydrous and Con.HCl?
Answer
D. 2-Methyl-2-propanol
31
Which among the following compounds undergo Cannizzaro reaction?
Answer
D. Trimethyl Acetaldehyde
32
In which of the following terpenes does the isoprene rule not hold?
Answer
C. Squalene
33
Which of the following types of plastic undergoes irreversible curing upon heating and cannot be remoulded?
Answer
D. Polyurethane
34
In which of the following reactions does diazonium chloride play a crucial role in organic synthesis?
Answer
B. Sandmeyer reaction
35
Which of the following compounds will give a positive carbylamine test?
Answer
B. P- Ethyl Benzylamine
36
Identify the following plane
Answer
C. (100) plane in BCC unit cell
37
Calculate the compressibility factor for , if two mole of it occupies 0.2 L at 100 K and 82.1 atm.
Answer
B. 1
38
Which of the following describes a Schottky defect in a crystal lattice?
Answer
A. A vacancy created by the absence of a cation and an anion in the lattice structure.
39
Which of the following correctly describes the types of statistics used to describe different systems of particles?
Answer
D. Fermi-Dirac statistics describe indistinguishable particles that obey the Pauli exclusion principle.
40
Which of the following statements correctly describes the Joule- Thomson effect?
Answer
C. The Joule-Thomson effect describes the temperature change of a real gas when it is expanded or compressed adiabatically at constant enthalpy.
41
Molar conductivity at infinite dilution of weak electrolytes can be determined by
Answer
B. Kohlrausch's law
42
The amount of Al deposited on passing 96500 Coulombs of charge through a solution of is
Answer
A. 9
43
In which of the following reactions, the value of Kp will be equal to Kc?
Answer
B. +
44
Calculate the overall order of the bimolecular reaction based on the following data. A + B → Product Con. A Conc. B Rate of the reaction 0.01M 0.01M 1 × 10³ 0.02M 0.01M 4 × 10³ 0.01M 0.02M 2 × 10³
Answer
D. 3
45
The pH of a solution is equal to its pKa value, when
Answer
C. The concentration of conjugate base and conjugate acid are equal
46
Which of the following molecules will have a center of symmetry?
Answer
C. Hydrogen
47
Which of the following factors will affect the Chemical shift values in NMR spectroscopy?
Answer
B. Electron density around the central atom
48
What is the result of applying the operator A = d²/dx² to f(x) = 10x³?
Answer
D. 60x
49
What is the energy obtained for a particle in a 3D box?
Answer
D. E = (h²/8m)(nₓ²/a + nᵧ²/b + n_z²/c)
50
Why are stokes lines more intense than anti-stokes lines in Raman effect?
Answer
C. Ground state is more populated than excited state
51
Choose the CORRECT answer. i. The cambium ring in roots is partly primary and partly secondary in origin. ii. Medullary rays are less distinct in sapwood. iii. Tracheid parenchyma contribute 90-95% in hardwood. iv. Vascular cambium and cork cambium are lateral meristems.
Answer
D. False, True, False, True
52
The position of phloem in the vertical section of a typical dicot leaf is
Answer
A. Facing the upper epidermis.
53
Choose the CORRECT answer. Nucleated cells of phloem: _________; Living cells of xylem: __________.
Answer
B. Companion cells; Ray & Parenchyma
54
_________ cannot bring genetically same type of pollens on stigma.
Answer
D. Xenogamy
55
Some statements regarding the types of embryo sacs in angiosperms are given below. Choose the INCORRECT one. i. In polygonum type, the nucleus divides thrice to form the eight nucleated embryo sac. ii. Allium type develops from the micropylar dyad. iii. Endymion type develops from the chalazal dyad. iv. Nuclear fusion occurs in Peperomia type.
Answer
D. ii, iii, iv
56
The most suitable preparation to study the meiotic behavior of chromosomes is ________.
Answer
B. Smear
57
Determine the mean of the median and mode of the data given below. 5, 10, 3, 6, 4, 8, 9, 3, 15, 2, 9, 4, 19, 11, 4
Answer
A. 5
58
Choose the Correct statement from the following: i. Thin layer chromatography is a type of partition chromatography, while paper chromatography is a type of adsorption chromatography. ii. Ion exchange chromatography is affinity chromatography. iii. In SDS-PAGE, the proteins are separated according to their electrophoretic mobility. iv. Electrophoresis can be used for the separation of lipids.
Answer
C. ii and iii
59
Match the following and choose the correct answer: i. Aecidiospores a. Agaricus ii. Ascospores b. Peziza iii. Basidiospores c. Penicillium iv. Conidia d. Puccinia
Answer
D. i-d, ii-b, iii-a, iv-c
60
Choose the Correct answer: _________ : Early blight of Potato and Tomato; _________ : Ergot of rye and grasses. _________ : Late blight of Potato and Tomato; _________ : Tikka disease of groundnut.
Answer
B. Alternaria solani, Claviceps purpurea, Phytophthora infestans, Cercospora personata.
61
Lycopodium clavatum: "Club moss"; ________ : "Irish moss".
Answer
A. Chondrus
62
What is Protonema?
Answer
A. Young gametophyte of Funaria
63
Stomium and Annulus are parts of
Answer
C. Sporangium of Pteris
64
Function of transfusion tissue in Cycas
Answer
B. Conduction
65
Veterinary drug which caused massive death of vultures in South Asia
Answer
D. Diclofenac
66
Chemical which causes Blue Baby Syndrome
Answer
D. Nitrate
67
Fly ash is
Answer
B. Waste from thermal power plant
68
Black Dammer is obtained from
Answer
C. Canarium strictum
69
Cyathium inflorescence is a character of the family
Answer
D. Euphorbiaceae
70
Lemon is an example for
Answer
B. Hesperidium
71
A fibre yielding plant
Answer
D. Linum usitatissimum
72
Gymnosperms dont have
Answer
C. Vessels
73
The specific functions of the plasma membrane, including selective transport of molecules and cell-cell recognition, are carried out by
Answer
B. Membrane Proteins
74
Which of the following crosses can be used to identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele?
Answer
A. Testcross
75
Name the antigens present in O group blood
Answer
D. No antigens
76
As per Chargaff's rule, which among the following statements are correct: i. Adenine can pair with Guanine ii. Cytosine can pair with Guanine iii. Adenine can pair with Thymine iv. Cytosine can pair with Thymine
Answer
B. Statements ii and iii
77
The concept of 'Natural selection and survival of the fittest' is the major thrust area in
Answer
C. Darwinism
78
Which of the following statements are true with regard to the phenomenon of guttation through hydathodes? i. Guttation is mostly driven by root pressure. ii. Guttation can happen when the stomata are closed. iii. Guttation can happen when the humidity is high. iv. Guttation is used to detoxify plant tissues by exporting excessive salts or molecules.
Answer
D. All the four statements are correct
79
Light reaction of photosynthesis happens in
Answer
A. Grana of chloroplast
80
Which among the following will be the respiratory substrate if the Respiratory Quotient is 1?
Answer
B. Carbohydrate
81
Which one of the following cannot promote nitrogen fixation in its free- living state?
Answer
A. Anabaena
82
Which among the following is not an aliphatic amino acid?
Answer
D. Phenylalanine
83
If 'C' is a cybrid of 'A' and 'B', then
Answer
A. The nucleus of 'C' will be that of earlier 'A' or 'B' and the cytoplasm will be a hybrid of 'A' and 'B'
84
Type II Restriction endonuclease enzymes will
Answer
B. Cleave within or at short specific distances from the recognition site
85
Which among the following is not an advantage in RAPD technique?
Answer
B. All RAPD markers are dominant
86
Which among the following is not involved in the production of Single Cell Proteins?
Answer
A. Oedogonium abbreviatum
87
Which is the estimated size of human genome in base pairs?
Answer
C. 3 billion
88
Identify the method which is not a vegetative propagation method.
Answer
B. Hybridization
89
Sharbati Sonora is a mutated Mexican dwarf variety of the crop
Answer
C. Wheat
90
Raphanobrassica is a hybrid between
Answer
A. Radish and Cabbage
91
Which of the following best defines polyclonal seed germination in rubber cultivation?
Answer
B. Propagation of rubber trees from seeds resulting from controlled cross- pollination between genetically diverse parent trees.
92
Which of the following is considered the best vegetative propagation method in rubber cultivation?
Answer
C. Bud grafting
93
Which of the following best describes the function of the latex vessel ring in rubber trees?
Answer
C. Regulating the flow of latex during tapping.
94
What does IRRDB stand for in the context of rubber cultivation?
Answer
A. International Rubber Research and Development Board
95
What is the common intermediate compound produced during the synthesis of Hevea rubber?
Answer
A. Isopentenyl diphosphate (IDP)
96
Which of the following types of tapping knives is most commonly used for rubber tapping?
Answer
C. Jebong knife
97
What does TPD stand for in the context of rubber tapping?
Answer
C. Tapping Panel Dryness
98
Which of the following fungi is primarily responsible for causing powdery mildew in rubber trees?
Answer
B. Oidium heveae
99
Besides latex and timber, what other product can be harvested from rubber trees to generate additional income?
Answer
C. Honey from rubber tree flowers
100
What are root trainers in the context of rubber biology?
Answer
D. Containers used for propagating rubber tree seedlings
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