| Post Name | Laboratory Assistant (Dairy/ CFP) - Kerala Co-operative Milk Marketing Federation Ltd |
|---|---|
| Question Paper Code | 081/2022 |
| Category Code | 402/2021 |
| Date of Test | 12 August 2022 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
According to Arrhenius concept acid is a substance which dissociate to give ______
ions in solution.
Answer
C. H+
2
pH of 1.0 M sodium hydroxide solution is
Answer
C. 14
3
In a thermodynamic process, if no heat enters or leaves the system is called
Answer
B. Adiabatic process
4
When alcohol added to water surface tension
Answer
B. Decreases
5
2 g of sodium hydroxide dissolved in 100 mL water, the molarity of the solution is
Answer
A. 0.5 M
6
Colligative property of a solution is proportional to
Answer
B. Number of solute particles in the solution
7
In Ag-Cu cell oxidation occurs at
Answer
D. Cu electrode
8
Which of the following molecule does not show infrared spectrum ?
Answer
C. H2
9
The elastic scattering of photons are called
Answer
B. Rayleigh scattering
10
Which of the following shift lead to increased intensity on absorption of UV visible
radiation ?
Answer
A. Hyperchromic shift
11
Number of ESR hyperļ¬ne splitting lines of methyl radical
Answer
D. 4
12
For measuring chemical shift in NMR spectroscopy the chemical compound commonly
used as reference is
Answer
A. tetramethyl silane
13
In which chromatography, stationary phase is held in a narrow tube and the mobile
phase is forced through under pressure ?
Answer
A. High pressure liquid chromatography
14
The ļ¬rst milk produces by cow after calving is called
Answer
A. Colostrum
15
Speciļ¬c gravity of milk can be determined by using
Answer
C. Lactometer
16
Which of the following cow breed gives maximum yield of milk ?
Answer
D. Holstein-Friesian
17
The vitamin which is deļ¬cient in milk is
Answer
D. C
18
The ofļ¬cial record of registered animals of a breed kept by the breed association is
called
Answer
D. Heard book
19
To the water extract of the cattle feed, addition of concentrated sulfuric acid _______
colour indicates the presence of Mahua cake.
Answer
B. violet
20
Ammonium molybdate reagent is used for identifying _________ in cattle feed.
Answer
D. phosphorous
21
The color of milk is a blend of individual effects produced by colloidal casein particles
and
Answer
C. carotene
22
Volhardās method is used for detecting _________ content in butter.
Answer
B. salt
23
Example for Newtonian ļ¬uid is
Answer
A. milk
24
Milk is a rich source of energy, the fat content in cow milk is _______ cal/g.
Answer
D. 9.3
25
Total solid and total SNF in milk determined by ________ method.
Answer
Question Cancelled
26
Which among the following requires sodium ion dependent transport for intestinal
absorption ?
Answer
A. Glucose
27
Identify the protein which has phosphate as its prosthetic group.
Answer
B. Casein
28
Megaloblastic anaemia is caused due to the deļ¬ciency of which among the following
vitamin ?
Answer
D. Folic acid
29
Which among the following enzyme is used in cancer therapy ?
Answer
Question Cancelled
30
The level of structural organization of protein unaffected by denaturation is
Answer
A. Primary
31
Identify the subunits in the heteropolysaccharide Keratin sulphate.
Answer
D. glucuronic acid and N-acetyl galactosamine-4-sulphate
32
The positions of double bond in linolenic acid are
Answer
C. 9, 12 and 15
33
Identify the plasma protein responsible for maintaining the osmotic balance in our
body.
Answer
B. Albumin
34
Identify the enzyme which catalyses substrate level phosphorylation reaction in TCA
cycle.
Answer
C. Succinate thiokinase
35
The disease caused due to the deļ¬ciency of phytanic acid ļæ½-oxidase is
Answer
B. Refsumās disease
36
Which among the following amino acids do not undergo transamination reaction ?
Answer
A. Lysine and threonine
37
The normal serum calcium concentration is
Answer
C. 9.1 ā 11 mg/dL
38
Cyclopentano perhydro phenanthrene nucleus is the basic structural unit in which
biomolecule ?
Answer
C. Cholesterol
39
The mineral oxide content in a food sample can be determined by measuring the
Answer
B. Ash content
40
Which among the following is the range of the melting point of milk fat ?
Answer
D. 32 ā 36Ā°C
41
The antibody which is present in the highest concentration in serum is
Answer
D. IgG
42
The groups located on the surface of an antigen molecules which are recognized by
the antibody is
Answer
B. Epitope
43
Which among the following radioactive isotope is commonly used in Radioimmunoassay ?
Answer
C. Iodine-125
44
Identify the solvent used for the process of defatting in cold extraction.
Answer
A. Petroleum ether
45
Blocking agent is used in western blotting. Identify the purpose.
Answer
B. Blocks the binding of antibody to the membrane
46
Which among the following technique makes use of immunoļ¬uorescence ?
Answer
A. Confocal microscopy
47
Identify the constituents in the milk protein.
Answer
D. Both
48
The protein content can be measured using which among the following methods ?
Answer
A. Kjeldahl method
49
The class of antibody that is expressed on the surface of
Answer
D. IgM
50
Identify the enzyme used in the technique of ELISA.
Answer
A. Horse radish peroxidase
51
Rocky mountain spotted fever is caused by
Answer
A. Rickettsia rickettsii
52
Bacterial conjugation was described by
Answer
B. Lederberg and Tatum
53
Which of these are basic dyes ?
Answer
A. Methylene blue, Crystal violet
54
Mesosomes are present in
Answer
C. Both gram positive and negative bacteria
55
Bacterial membrane contains sterol like molecules called hapnoids. Hapnoids are
Answer
A. Penta cyclic sterols
56
Final blow to spontaneous generation was given by
Answer
C. John Tyndall
57
Fixative osmium tetroxide is used to stabilize
Answer
C. Cell structure
58
Diameter of metal grid for specimen mount used in Electron Microscope is
Answer
A. 3.05 mm
59
Medium containing serum or egg are sterilized by
Answer
C. Inspissator
60
The membrane used in budding of corona viruses are
Answer
C. Golgi apparatus and Endoplasmic reticulum
61
Which of the following is most effective in destroying micro-organisms ?
Answer
A. High temperature low moisture
62
Which of the below mentioned condition determines Thermal Death Time (TDT) ?
Answer
D. Temperature is ļ¬xed and time is varied
63
Which of the algae has structure called Gullet ?
Answer
A. Euglenoids
64
In modiļ¬ed atmosphere packaging content of carbondioxide commonly used to
prevent spoilage of packed food is
Answer
C. Greater than 60%
65
Which of the statements is correct regarding algal toxins ?
Answer
D. All of the above
66
Ultra high temperature pasteurisation process involves
Answer
C. 141 ļæ½ C for 2 seconds
67
In ļ¬at sour spoilage which conditions are observed
Answer
B. Acid formation without gas
68
The intensity of radiation commonly used to sterilize meat products in rad
pasteurisation is
Answer
A. 4.5 ā 5.6 mega rads
69
Method of sterilization used to remove 90% of pathogenic micro-organisms from
spices is
Answer
D. Ethylene oxide
70
Semisoft blue cheese are produced by
Answer
C. Penicillium roqueforti
71
Xerophillic organisms preferred to grow at
Answer
B. Low aw condition
72
Dairy product of mold lactic fermentation is
Answer
B. Villi
73
Which of the following is reason for rancidity of fat in butter ?
Answer
A. Production of short chained fatty acids
74
Coumarins is a natural antimicrobial agent found in
Answer
B. Plants and vegetables
75
Sandwich ELISA method is used for the detection of
Answer
B. Antigen
76
Which of the following possess buffering capacity ?
Answer
D. All of the above
77
The number of different possible DNA sequences with ānā nucleotides is
Answer
C. 4n
78
Cytosine is
Answer
D. 2-oxy-4-amino pyrimidine
79
Which is the least conserved histone ?
Answer
B. H1
80
DNA Sequence interacts with ļæ½ factor of RNA polymerase is
Answer
C. TATAAT
81
Bio pesticides are
Answer
D. All of these
82
Single cell protein is derived from
Answer
D. All of these
83
Therapeutic proteins
Answer
D. All of these
84
Which enzyme is not used for improving quality of bread in food industry ?
Answer
B. ļæ½-galactosidase
85
Patent Act Amendment in 2021 refers to
Answer
B. Reduction of fee for patent ļ¬ling and prosecution for educational institutions
86
The following biocontrol agent is commonly used in controlling Phytophthora infections
in plants
Answer
A. Trichoderma
87
GP 293 cell lines are mainly used in the over production of
Answer
C. Growth factor
88
Meat tenderization is often enhanced by
Answer
C. Both A and B
89
Which of the following is a chaotropic agent ?
Answer
B. Guanidine
90
Agarose consists of
Answer
A. galactose and 3, 6-anhydrogalactose
91
Stain used to detect glycoproteins in gel
Answer
C. Periodic acid-Schiff stain
92
Asymmetric PCR differs from regular PCR in
Answer
A. The amount of primer used
93
Which is the highly sensitive technique used for the identiļ¬cation and quantiļ¬cation
of pesticide residues ?
Answer
C. LC-MS
94
Recombinant DNA technology was invented by
Answer
A. Boyer, Cohen and Paul Berg
95
Technique which employ nucleic acid probe for the diagnosis of viral diseases ?
Answer
D. all of these
96
Regulations and Guidelines for Recombinant DNA Research and Biocontainment
came into force in
Answer
B. 2017
97
Which membrane is commonly used in Northern blotting ?
Answer
B. Nylon
98
Which of the following can be used as a vaccine ?
Answer
D. All of these
99
Which one of the following statements is not correct with respect to DNA probes
used in microbial identiļ¬cation ?
i. They cannot be used to identify microorganisms that are not readily cultured or
biochemically identiļ¬ed.
ii. They cannot be used to identify microorganisms that do not possess diagnostic
antigens.
iii. It allows differentiation of pathogenic from avirulent strains.
iv. Can identify of antibiotic resistance genes.
Answer
B. i and ii is wrong
100
First recombinant vaccine was against
Answer
A. Hepatitis B
Discussion
Ask a doubt or share a tip.
No comments yet ā start the discussion.