| Post Name | Finger Print Searcher -Police Department |
|---|---|
| Question Paper Code | 103/2021 |
| Category Code | 139/2020 |
| Date of Test | 1 October 2021 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
The Question Paper will be given in the form of a Question Booklet. There will be four versions of Question Booklets with Question Booklet Alpha Code viz. A, B, C & D.
Answer
D. having one correct answer. Choose the correct answer and darken the bubble corresponding to the question number using Blue or Black Ball Point Pen in the OMR Answer Sheet. 11. Each correct answer carries 1 mark and for each wrong answer 1/3 mark will be deducted. No negative mark for unattended questions. 12. No candidate will be allowed to leave the examination hall till the end of the session and without handing over his/her Answer Sheet to the Invigilator. Candidates should ensure that the Invigilator has verified all the entries in the Register Number Coding Sheet and that the Invigilator has affixed his/her signature in the space provided. 13. Strict compliance of instructions is essential. Any malpractice or attempt to commit any kind of malpractice in the Examination will result in the disqualification of the candidate. -1
2
What is the velocity of Radio waves in free space ?
Answer
A. 3 × 108 m.s–1
3
A half wave rectifier produces 80 watts output power when an a.c. power of 200 watts is applied as input. What is the rectification efficiency ?
Answer
B. 40%
4
Which of the following electromagnetic radiation is used for producing crystal diffraction patterns ?
Answer
B. X-rays
5
The self destruction of an unstabilised transistor by thermal run away is caused by
Answer
C. Collector current
6
Oscillator in an electronic circuit is used for
Answer
A. Energy conversion
7
Identify the reason for getting different colours in the case of oil spread over water.
Answer
C. Non-uniform thickness and inclination
8
Where do we find maximum cosmic ray intensity ?
Answer
C. Geomagnetic poles
9
Which is the main energy source of sun ?
Answer
C. Fusion reaction
10
Identify the weakest force.
Answer
D. Gravitational force
11
A particle is executing simple harmonic motion. What fraction of the total energy is kinetic, if the displacement is 1/2 the amplitude ?
Answer
D. 3/4
12
Which among the following is not the unit of time ?
Answer
A. Parsec
13
Which factor determines the difference between isothermal and adiabatic elasticity ?
Answer
C. Ratio of specific heats
14
most probable position of a particle in a box for n = 1 state is at
Answer
C. x = l/2
15
How much energy is required to knock out an electron from the innermost orbit ?
Answer
Question Cancelled
16
Which observation led to the discovery of deuterium by Harold Urey in 1932 ?
Answer
B. difference in wavelength
17
Two charges ‘4e’ and ‘e’ are separated by a distance ‘a’. Where a third charge ‘q’ should be placed to keep the equilibrium ?
Answer
A. a/3 from e
18
Identify the quark having greatest rest mass.
Answer
D. Bottom
19
Which among the following is a Three-level laser ?
Answer
C. Ruby laser
20
Identify the multivibrator which generates square waves of its own.
Answer
B. Astable
21
In an adiabatic expansion, let U1 and U2 be the internal energies of the initial and final state. Which is the correct expression ?
Answer
A. U1 > U2
22
What is the change in entropy when 341.25 grams of ice at 0°C is converted into water at the same temperature ? latent heat of ice = 80 cal/g.
Answer
Question Cancelled
23
What is the average Fermi energy at 0 K ?
Answer
Question Cancelled
24
What is VANTA BlACK ?
Answer
A. Vertically aligned nanotube arrays
25
What happens to the Gibb’s function in a first order phase change ?
Answer
D. Constant
26
“It is impossible to transfer heat from a cold body to a hot body without doing external work.” This is
Answer
D. Clausius’ statement
27
Biogas produced by the anaerobic decomposition of organic materials
Answer
B. methane
28
An electrical device that converts the energy of light directly into electricity
Answer
C. Photovoltaic cell
29
What is the number of nuclei remaining after ‘n’ half life periods ?
Answer
A. N0/2n
30
Objects which are comprised of even number of Fermions comes under the category
Answer
B. Bosons
31
What is the difference between a zone plate and a convex lens ?
Answer
D. Zone plate has number of foci
32
How is the emission of photoelectrons produced ?
Answer
C. Inelastic collision between a photon and an electron
33
What is the momentum of the gamma ray photon having wavelength 10–10 m ?
Answer
B. h × 1010
34
The couple per unit twist for a hollow cylinder and a solid cylinder is C1 and C2 respectively. Choose the correct expression.
Answer
Question Cancelled
35
Which one contributes maximum to the density of universe ?
Answer
C. dark matter
36
large hadron collider is situated at
Answer
B. CERN
37
‘little Boy’ is the name of
Answer
D. Atom bomb
38
What is the name given to lines drawn through different places having the same declination ?
Answer
C. Isogonic lines
39
What is the new resistance of a wire of resistance ‘R’ drawn ‘n’ times its original length ?
Answer
A. n2R
40
Who received Nobel Prize for the discovery of photoelectric effect ?
Answer
B. Albert Einstein
41
Which of the following molecules have larger bond angle ?
Answer
A. NF3
42
Among the following iso-electronic ions which have larger ionic radius ?
Answer
A. N3–
43
Among the following compounds : (i) CH3 – COOH (ii)
Answer
B. (iv) > (i) > (ii) > (iii)
44
match the following : A B (i) lyman series (i) Far Infra-red (ii) Paschen series (ii) Infra-red (iii) Balmer series (iii) Near Infra-red (iv) Pfund (iv) Ultra-violet (v) Visible
Answer
C. (i) – (iv), (ii) – (ii), (iii) – (v), (iv) – (i)
45
How many α and β particles are lost when 92U238 is converted to 88Ra226 ?
Answer
A. 3α-particles and 2β-particles
46
Packing fraction is related to
Answer
B. mass defect
47
Which of the following is the correct order of bond dipole moment?
Answer
A. C−Cl > C−Br > C−I
48
Among the following molecule which has the longest
Answer
C. H bond length ?
49
Trimethyl amine is a weaker base than dimethyl amine due to
Answer
D. Steric effect
50
Identify an electrophile.
Answer
B. SO3
51
Entropy is a measure of
Answer
D. Randomness
52
diels-Alder reaction is an example of which type of reaction ?
Answer
C. Pericyclic reaction
53
Compounds HCN and HNC are
Answer
C. Functional isomers
54
Baeyer’s reagent is
Answer
B. 1% Alkaline KmnO4 solution
55
The compound which does not show Friedel-Craft’s reaction is
Answer
C. Nitrobenzene
56
Which of the following molecule can exhibit geometrical isomerism?
Answer
D. CH₃−CH=CH−CH₃
57
The reagent which may be used to distinguish between starch and cellulose is
Answer
B. Iodine solution
58
The polysaccharide on hydrolysis give only fructose is
Answer
D. Inulin
59
Glucose and mannose may be obtained by Kiliani synthesis from
Answer
A. D-arabinose
60
The oxides of nitrogen which is isoelectronic with CO2 is
Answer
D. N2O
61
Gamma rays are
Answer
C. Electromagnetic radiations
62
Among the following which electromagnetic radiation has maximum wavelength ?
Answer
B. Radio waves
63
The half-life period of a radioactive element is 140 days. After 560 days, one gram of the element will reduce to
Answer
D. 1/16 g
64
Splitting of spectral line when atoms are subjected to strong electric field is called
Answer
A. Stark effect
65
Which of the following has the largest atomic radius ?
Answer
C. Ra
66
Which among the following is the strongest acid ?
Answer
D. HI
67
Halogen which shows highest electropositive character is
Answer
B. I
68
The gas used for inflating the tires of airplanes is
Answer
A. N2 and He
69
Plaster of Paris is
Answer
C. CaSO4.½ H2O
70
Which of the following compounds has the lowest anion to cation size ratio ?
Answer
D. CsF
71
The fingerprint region in the IR spectrum is
Answer
A. 900 – 1400 cm–1
72
Which of the following is a chromophore ?
Answer
B. NO2
73
When λmax of a compound shifts to a longer wavelength, the compound is said to have undergone
Answer
C. Bathochromic shift
74
Which of the following is thermosetting plastic ?
Answer
B. Bakelite
75
The acid used in the synthesis of nylon 66 is
Answer
D. Adipic acid
76
Which among the following aldehyde undergoes Aldol condensation ?
Answer
C. CH3CHO
77
Which is the correct order of reactivity of alkyl halides in SN2 reaction ?
Answer
D. RI > RBr > RCl > RF
78
Which of the following is an intensive property ?
Answer
A. Viscosity
79
The SI unit of Radioactivity is
Answer
C. Becquerel
80
X-rays are used for the study of crystal structure because
Answer
B. The wavelength of X-rays is of the same order of magnitude as the interatomic spacing in crystals
81
Which of the following is a computer code ?
Answer
C. ASCII
82
What is FTP ?
Answer
D. File Transfer Protocol
83
A computer can store data on all of the following devices except
Answer
A. Keyboard
84
Authentication of any electronic record by means of an electronic procedure is called
Answer
B. digital signature
85
A markup language used for creating web pages and web applications
Answer
B. HTml
86
Choose the output device.
Answer
D. monitor
87
An attack that tricks people into providing sensitive information
Answer
C. Phishing
88
A ________ is a network security system that uses rules to control incoming and outgoing network traffic.
Answer
D. Firewall
89
Section 66A of Information Technology Act, 2
Answer
A. Preventing posting of harmful and offensive information
90
Which of the following is a Cyber Crime ?
Answer
C. Child grooming
91
Indian Independence Act, 1947 granted what sort of status to India ?
Answer
C. dominion
92
The principle of communal representation in India was first introduced in which Act ?
Answer
A. The Indian Council Act, 1909
93
Who said these words about Cripps Proposals : ‘‘Post-dated cheque on a failing Bank” ?
Answer
A. mahatma Gandhi
94
Under which Act, Union Public Service Commission was formed ?
Answer
D. 1935 Act
95
When the Constituent Assembly was formed ?
Answer
B. 1946
96
The emergency powers of the President are modelled on the Constitution from which country ?
Answer
B. Germany
97
Powers, Privileges and Immunities of Parliament and its members are protected by
Answer
B. Speaker
98
The final interpreter of the Constitution of India
Answer
D. Supreme Court
99
Which Amendment Act lowered the voting age from 21 to 18 years ?
Answer
A. 61st
100
All disputes in connection with elections to lok Sabha is submitted to
Answer
A. High Court
Discussion
Ask a doubt or share a tip.
No comments yet — start the discussion.