| Post Name | REVISED -SCIENTIFIC OFFICER - CHEMICAL EXAMINERS LABORATORY |
|---|---|
| Question Paper Code | 040/2021 |
| Category Code | 308/2019 |
| Date of Test | 13 April 2021 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
What is the Point Group of Naphthalene ?
Answer
C. D2h
2
If a molecule is having the following symmetry element IR active vibrational modes
are Raman inactive and vice versa
Answer
D. i
3
Which of the following molecule does not show rotational spectrum ?
Answer
D. H2
4
Staining of wound edges
Choose the correct option :
Answer
A. 1 and 2 only
5
If A and B are two operators which commute with one another, then the commutator
operator,
Answer
C. Zero
6
For orbitals with I ļæ½ 0, number of nodes in any radial function is given by
Answer
A. n ā I ā 1
7
For reactions having half life time 10ā6 or less the method used for the study of fast
reaction
Answer
A. Flash photolysis
8
Mean free path of a gas molecule is inversely proportional to
Answer
B. Pressure
9
At high substrate concentration, enzyme catalysed reaction becomes ___________
order reaction.
Answer
A. Zero
10
Half life of a reaction doubles when initial concentration is reduced to half. What is
the order of the reaction ?
Answer
C. Two
11
Number of isomeric derivatives for neutral closo carborane, C2B10H12 is
Answer
B. Three
12
The molar conductivities at inļ¬nite dilution of NaCl, Nal and Rbl are 12.7, 10.8 and
9.1 mS m2 molā1 respectively. The molar conductivity at inļ¬nite dilution of RbCl is
Answer
C. 11 mS m2 molā1
13
The ground-state term symbol of Nb (Z = 41) is ā¶D. The corresponding electronic configuration is
Answer
A. [Kr]4dā“5SĀ¹
14
For an electron in a three-dimensional rectangular box with L_x = 1 Ć 10ā»Ā¹āµ m, L_y = 1.5 Ć 10ā»Ā¹āµ m and L_z = 2 Ć 10ā»Ā¹āµ m, calculate the zero-point energy.
Answer
B. 1.01 Ć 10ā»ā· J
15
In the IR spectrum of cyclohexanone, the carbonyl absorption band appears at
Answer
B. 1715 cmā1
16
Calculate the angle at which ļ¬rst order reļ¬ection will occur in an X-ray spectrophotometer
when X-rays of wavelength 1.54 Ć
are diffracted by the atoms of the crystal, given
that the inter planar distance is 4.04 Ć
.
Answer
D. 11Ā°
17
For the deposition of Pb by electroplating which is the most suitable compound among
the following
Answer
C. Pb(BF4)2
18
Total number of hyperļ¬ne EPR lines for octahedral high spin Mn (II) complexes
(I = 5/2 for Mn) is
Answer
A. 30
19
No. of signals expected in the CNMR spectrum of anthracene is
Answer
C. 4
20
During addition of polymerization, the reaction proceeds via
Answer
B. Free radical chain reaction
21
Which of the following will not result in deviation from Beerās Law ?
Answer
D. Path length of cuvette
22
The ratio of relative intensities of signals in the ļ¬rst order carbon NMR spectrum of
CD3Cl is
Answer
A. 1 : 3 : 6 : 7 : 6 : 3 : 1
23
Conļ¬gurations of carbon atoms C3 and C4 in
Answer
D. ribose are
24
The S and L values of Ā¹āµN are
Answer
B. 3/2 and 0
25
pH of an aqueous solution containing [H+] = 3 Ć 10ā3 M is
Answer
B. 2.523
26
Which of the following aqueous solutions
Answer
C. NaCl
27
Zero point energy of SHO whose vibrational frequency is ļæ½, is given by
Answer
B. hļæ½/2
28
Which hydrocarbon is known as Marsh gas ?
Answer
D. Methane
29
Which of the following is not an ortho para directing group ?
Answer
D. Nitro
30
This compound is identiļ¬ed as the chief component of oil of winter green is
Answer
A. Methyl salicylate
31
Total yield in mitochondrial breakdown of pyruvate per glucose molecule is
Answer
Question Cancelled
32
Zellwegerās syndrome is caused by
Answer
D. Both
33
Which of the following is the inhibitor of complex III ?
Answer
B. Antimycin A
34
Match the following :
1. Southern blotting A. Alwine
2. Western blotting B. E. M. Southern
3. Northern blotting C. A. Jeffrey
4. DNA fingerprinting D. Towbin
Answer
B. 1-B,2-D,3-A,4-C
35
The lipoprotein possessing the highest quantity of phospholipid
Answer
A. HDL
36
To avoid ketosis, the total content of fat (F) must not exceed which of the following
sum of carbohydrate
Answer
C. and protein (P) ?
37
Fischerās lock and key model cannot explain
Answer
B. Allosteric modulation
38
Which of the following sequence is correct in cholesterol synthesis ?
Answer
A. Mevalonate ļæ½ Isoprenoid units ļæ½ Squalene ļæ½ Lanosterol
39
Find out the mismatch between amino acid and its corresponding amine.
Answer
C. Ornithine-cadaverine
40
A one year old female patient is lethargic, weak and anemic. Her height and weight
are both low for her age. Her urine contains an elevated level of orotic acid. The
administration of which of the following compounds is most likely to alleviate her
symptoms ?
Answer
B. Uridine
41
Which immunoglobulin does play role in hypersensitivity reactions and defend the
body from helminthic parasites ?
Answer
D. IgE
42
The resolving power of TEM is derived from
Answer
A. Electrons
43
Which of the following metabolic disorder of phenyl alanine and tyrosine metabolic
pathway does not match to its defective enzyme ?
Answer
C. Tyrosinaemia Type II ā Hydroxylase
44
A sedentary ļ¬fty-year-old man weighing 80 kg requests a physical examination. He
denies any health problems. Routine blood analysis is unremarkable except for plasma
cholesterol of 280 mg/dl. The man refuses drug therapy for his hypercholesterolemia.
Analysis of a one-day dietary recall showed the following :
Kilocalories 3475 kcal Cholesterol 822 mg
Protein 102 g Saturated fat 69 g
Carbohydrates 383 g Total fat 165 g
Fiber-Crude 6g
Changes in which one of the following dietary components would have the greatest
effect in lowering plasma cholesterol ?
Answer
B. Saturated fat
45
Pulse ļ¬eld gel electrophoresis separates DNA molecule of size
Answer
C. 30-50 kb
46
Amino sugars (Hexosamines) are not the constituents of which one of the following ?
Answer
D. Streptomycin
47
Diphtheria toxin inhibits translation by biding with
Answer
C. eEF-2
48
An enzyme of purine metabolism associated with immunodeļ¬ciency disease
Answer
A. Adenosine deaminase
49
Ketone bodies are not utilized or oxidized in which one of the following tissues ?
Answer
C. Liver
50
A teenager concerned about his weight attempts to maintain a fat-free diet for a
period of several weeks. If his ability to synthesize various lipids were examined, he
would be found to be most deļ¬cient in his ability to synthesize
Answer
D. Prostaglandins
51
A tRNA molecule that is supposed to carry cysteine (tRNAcys) is mischarged, so that
it actually carries alanine
Answer
B. It will be incorporated into a protein in response to a cysteine codon
52
Which of the sequence of formation of initiation complex during translation with the
help of initiation factors ?
Answer
A. 30S ļæ½ mRNA ļæ½ f-Met-tRNAf ļæ½ 50S
53
How many DNA duplexes are obtained from one DNA duplex after 4 cycles of PCR ?
Answer
D. 16
54
In hemolytic jaundice Vandenberg reaction is
Answer
A. Indirect positive
55
The following is the sum of three steps in the citric acid cycle
A + B + FAD + H2O ļæ½ ļæ½ļæ½ļæ½ļæ½ C + FADH2 + NADH
Reactant A Reactant B Reactant C
Answer
B. Succinate NAD+ Oxaloacetate
56
Which one of the following statements concerning the binding of oxygen by haemoglobin
is correct ?
Answer
C. The oxygen afļ¬nity of haemoglobin increases as the percent saturation
increases
57
Passive immunity is obtained by injecting
Answer
C. Antibodies
58
Mobilization of stored iron occurs in which of the following sequences ?
Answer
A. Ferritin of RE system ļæ½ Ferritin of intestinal mucosal cells ļæ½ Absorption from
Intestine
59
Which one of the following statements about the urea cycle is correct ?
Answer
D. Urinary urea is increased by a diet rich in protein
60
Shine-Delgarno sequence is present in which of the following RNA ?
Answer
B. mRNA
61
The suprasegmental feature juncture is related to
Answer
B. Duration
62
Which of the following are examples of physiological biometric ?
1. Retina
2. Thermogram
3. Keystroke dynamics
Answer
D. 1 and 2 only
63
Which of the following are useful to determine location of a given mobile device ?
1. Time Difference of Arrival
2. Time of Arrival
3. Enhanced Observed Time Difference
Answer
A. 1,2and3
64
Statement ā I : One of the primary technologies used to detect deception with
brain-based measures is Event-Related Potentials (ERPs).
Statement ā II : ERPs are derived from the Electroencephalogram (EEG).
Answer
D. Both Statement ā I and Statement ā II are true
65
A three-barrelled long ļ¬rearm with a combination of smooth and riļ¬ed barrels is better
known as
Answer
B. Drilling
66
The most common calibre of tear-gas ammunition encountered is
Answer
B. 8 mm
67
Velocity of recoil of a gun weighing 3 kilograms ļ¬ring a 100 gram bullet at
300 metre/second is
Answer
Question Cancelled
68
Which of the following ASTM standards are for separation of ignitable liquid residue
from fire debris ?
1. ASTM E1386-00
2. ASTM E1412-00
3. ASTM E1413-00
4. ASTM E2388-00
Answer
C. 1,2 and 3 only
69
The common shapes of crystalline pigments are
1. Spherical
2. Cubic
3. Rectangular
4. Needle-shaped
Answer
D. 2, 3 and 4 only
70
Which of the following ASTM guidelines are for examination of Portland cement
clinker ?
1. ASTM C114-18
2. ASTM C1356-07
3. ASTM C1365-18
4. ASTM C1872-18e2
Answer
B. 2 and 3 only
71
Abnormal situations of hair growth where excessive growth of hair take place are
1. Hirsutism
2. Alopecia
3. Hypertrichosis
4. Hypotrichosis
Answer
C. 3 and 1 only
72
Particle size of sand in terms of grain size is
Answer
C. 63 microns to 2000 microns
73
Perspective grid method of crime scene sketching is best utilized for
1. Traffic accident case
2. Indoor scene
3. Dense forest type of scene
Answer
A. 1 and 2 only
74
Lakshadweep is under jurisdiction of which of the following CFSL ?
Answer
B. CFSL, Hyderabad
75
NICFS was renamed after the name of Lok Nayak Jayaprakash Narayan in the
year
Answer
D. 2003
76
The appellate jurisdiction of the Supreme Court can be invoked by a certificate granted
by the High Court concerned under Article
1. 125
2. 132(1)
3. 133(1)
4. 134
Answer
D. 2,3 and 4
77
According to Casperās dictum, time taken for the same amount of putrefaction to
occur when body is in air, water and buried in earth is in the ratio of
Answer
B. 1 : 2 : 8
78
Which of the following are characteristics observed in antemortem wounds ?
1. No hemorrhage
2. Cellular proliferation and infiltration
3. Absence of spurting
4. Staining of wound edges
Choose the correct option :
Answer
C. 2 and 4 only
79
In Tsuchihashi classiļ¬cation, reticulate grooves belong to which of the following type
of lip prints ?
Answer
D. Type IV
80
As per Gosta Gustafsonās method, which of the following is the single most reliable
criteria for determination of age from teeth in dead ?
Answer
D. Transparency of root
81
Running amok is a culture bound syndrome observed due to consumption of which
of the following plant poisons ?
Answer
A. Cannabis sativa
82
Statement ā I : Oral administration of heroin is 1.5 times more potent than that of
morphine.
Statement ā II : 6-monoacetyl morphine is more potent ļæ½ agonist than morphine.
In the light of the above two statements choose the correct option :
Answer
A. Both Statement ā I and Statement ā II are true
83
Match the following List ā I with List ā II :
List ā I List ā II
a. Organochlorines i. Allethrin
b. Pyrethroids ii. Dimeton
c. Organophosphorus iii. Carbaryl
d. Carbamates iv. Dieldrin
Choose the correct option from those given below :
a b c d
Answer
D. iv i ii iii
84
Hooch tragedy is a term associated with spurious consumption of which of the
following ?
Answer
D. Illicit liquor
85
Which of the following bending vibrations are observed in IR spectroscopy, which
causes two atoms move either above or below with respect to plane of central
atom ?
Answer
D. Wagging
86
Arrange the following in correct sequence for Atomic Mass Spectrometric Analysis.
1. Separation of ion based on m/z ratio
2. lonization
3. Measuring the ion current
4. Atomization
Choose the correct option :
Answer
A. 4,2,1,3
87
Which of the following is the characteristics of the ideal detector for Gas
Chromatography ?
1. Good stability and reproducibility
2. Nonlinear response to solutes
3. Short response time
4. Poor reliability
Choose the correct option :
Answer
C. 1 and 3 only
88
Which of the following is the correct sequence of F-number with respect to passage
of light through the lens ?
Answer
A. F/2.0 > F/2.8 > F/4.0 > F/5.6
89
Match the following List ā I with List ā II :
List ā I List ā II
a. Double diffusion in one dimension i. Ouchterlony method
b. Single diffusion in two dimensions ii. Mancini method
c. Double diffusion in two dimensions iii. Oudin method
d. Single diffusion in one dimension iv. Oakley-Fulthorpe method
Choose the correct option from those given below :
a b c d
Answer
B. iv ii i iii
90
Which of the following methods for determination of blood group in dried bloodstain
is based on the detection of antibody ?
Answer
B. Lattesā crust method
91
Reaction in Barberioās test for the chemical examination of seminal ļ¬uid detects the
presence of which of the following ?
Answer
A. Spermine
92
Which of the following polymorphic markers shows the least variation between
individuals ?
Answer
B. TPOX
93
āSquashā on the printed document is the characteristics of which of the following
printing techniques ?
Answer
C. Letterpress
94
Which of the following are considered as elements of execution ?
1. Line Quality
2. Line Continuity
3. Arrangement
4. Alignment
Answer
B. 1,2 and 4 only
95
Inability to write the correct words is better known as
Answer
D. Paragraphia
96
A document written entirely written and signed by the same person is better
known as
Answer
A. Holograph
97
A metal is suitable for casting of tool marks, if its
Answer
C. Melting point is low
98
Which of the following is a tire mark that occurs from rapid deļ¬ation of a tire on the
revolving wheel rim ?
Answer
A. Flat tire mark
99
āAn accused person is not criminally responsible, if his unlawful act is the product of
mental disease of metal defect.ā The statement is better known as
Answer
B. Durrhamās rule
100
Under which of the following Section of Wildlife (Protection) Act, 1972, a wild animal
shall be a Government property ?
Answer
D. 39(1)
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