# 07-02-2019 STATION OFFICER(SR FOR SC/ST ONLY) FIRE AND RESCUE SERVICES

STATION OFFICER(SR FOR SC/ST ONLY)
FIRE AND RESCUE SERVICES
EXAM DATE:07-02-2019
1.Lorentz force law is:
A.F=q(VxB+E)
B.F=qE+VxB
C.F=q(VxB)+E
D.F=q(VxE+B)
Ans:A

2.Two simple harmonic motions,y1=A sinwt and y2=A coswt are superimposed on a particle of mass m.The total mechanical energy of the particle is:
A.(1/2)mw (raise to 2) A(raise to 2)
B.mw(raise to 2) A (raise to 2)
C.(1/4)mw(raise to 2)A(raise to 2)
D.Zero
Ans:B

3.If p is the density of the material of a wire and Sigmathe breaking stress,the greatest length of the wire that can hang freely without breaking is:
A.2 sigma/p sigma
B.p/sigma g
C.pg/2 sigma
D.sigma/pg
Ans:D

4.How many times more intense is 90 dB sound than 40 dB sound?
A.5
B.50
C.500
D.10 raise to 5
Ans:D

5.Current per unit area in a direction perpendicular to the flow is:
A.Surface current density
B.Volume current density
C.Electric current
D.Surface charge density
Ans:B

6.Two coherent monochromatic light-beams of intensities 1 and 41 are superimposed.The maximum and minimum intensities in the resulting beam are:
A.51 and 1
B.51 and 31
C.91 and 1
D.91 and 31
Ans:C

7.Orbital motion of electrons accounts for the phenomenon of:
A.Paramagnetism
B.Ferromagnetism
C.Diamagnetism
D.All of the above
Ans:C

8.A rigid container with thermally insulated walls contains a coil of resistance 100 ohm carrying current 1 ampere.Change in internal energy after 5 minutes will be:
A.Zero
B.10 kilojoule
C.20 kilojoule
D.30 kilojoule
Ans:D

9.A hollow metal sphere of radius 5 cm is charged such that the potential on its surface is 10 V.The potential at the centre is:
A.2 V
B.10 V
C.Zero
D.None of the above
Ans:B

10.A magnetic needle is kept in a non-uniform magnetic field.It experiences:
A.A force and a torque
B.A force but not a torque
C.A torque but not a force
D.Neither a force nor a torque
Ans:A

11.An inductor L is allowed to discharge through a capacitor C.The emf induced across the inductor,when the capacitor is fully charged is:
A.Maximum
B.Minimum
C.Infinite
D.Zero
Ans:A

12.The angular momentum of an electron in an orbit is quantized because it is a necessary condition according to:
A.Wave nature of electron
B.Particle nature of electron
C.Pauli’s exclusion principle
D.None of the above
Ans:A

13.The state of an electron in an atom with principal quantum number n=3 and orbital quantum number 1=2 is
A.3s
B.4d
C.3p
D.3d
Ans:D

14.Atomic packing factor of the body centered cubic structure is:
A.74%
B.52%
C.68%
D.34%
Ans:C

15.The radius of the innermost orbit of the hydrogen atom is:
A.h (raise to 2) e 0/pie m e (raise to 2)
B.h(raise to 2) e 0/8 pie m e(raise to 2)
C.m e(raise to 4)/8 e 0(raise to 2) h (raise to 2)
D.m e(raise to 4)/8 pie e0(raise to 2)
Ans:A

16.Water conducting tissue in plants
A.Xylem
B.Chloroplast
C.Nucleus
D.Parenchyma
Ans:A

17.Anemophylly is a type of pollination
A.Insect
B.Animal
C.Wind
D.Bird
Ans:C

18.Expansion of TEM is
A.Transmit Electrical Microtome
B.Transverse Electron Microscope
C.Trasmissible Electron Microtome
D.Transmission Electron Microscope
Ans:D

19.Common name of Psilotum is
A.Horse tail
B.Whisk fern
C.Club moss
D.Water fern
Ans:B

20.Blast of Paddy is caused by
A.Pythium myriotylum
B.Albugo Candida
C.Magnaporthe oryzae
D.Cercospora agerati
Ans:C

21.Which one is a vital stain?
A.Safranin
B.Janus green
C.Phloroglucinol
D.Crystal violet
Ans:B

22.Diacytic stomata seen common in which plant family?
A.Ranunculaceae
B.Cruciferae
C.Rubiaceae
D.Acanthaceae
Ans:D

23.In Asafoetida morphology of useful part is
A.Latex from rhizome
B.Latex from leaf
C.Latex from stem
D.Latex from flower
Ans:A

24.MS medium is
A.Murashige and Schimid
B.Murashif and Skoog
C.Moral and Schimid
D.Murashige and Skoog
Ans:D

25.Water Bloom is caused by
A.Bryophytes
B.Algae
C.Pteridophytes
D.Bacteria
Ans:B

26.Name a fossil gymosperm
A.Rhynia
B.Lepidocarpon
D.Williamsonia
Ans:D

27.Example for simple lipid is
A.Fats
B.Lecithin
C.Cephalin
D.Sphingomelins
Ans:A

28.Ratio of complementary gene action is
A.9:3:4
B.9:3:3:1
C.9:7
D.12:3:1
Ans:C

29.Carmine is obtained from
A.Gymnosperm
B.Insect
C.Algae
D.Fungi
Ans:B

30.Anthrax diseased by
A.Virus
B.Bacteria
C.Insects
D.Birds
Ans:B

31.Larval form of sponges
A.Trochophore
B.Giochidium
C.Nauplius
D.Parenchymula
Ans:D

32.Watson and Crick demonstrated
A.Wobble hypothesis
B.One gene one enzyme hypothesis
C.Semi conservative mode of DNA replication
D.One gene one polypeptide hypothesis
Ans:C

33.Example of pseudocoelomate
A.Ascaris
B.Taenia
C.Fasciola
D.Schistosoma
Ans:A

34.Disease due to monosomic condition
A.Patau’s syndrome
B.Turner’s syndrome
C.Down’s syndrome
D.Klinefelter’s syndrome
Ans:B

35.Central Nervous system is formed from
A.Endoderm
B.Mesoderm
C.Ectoderm
D.All of the above
Ans:C

36.Tropical Asian countries are included in which of the following region?
A.Ethiopian region
B.Oriental region
C.Nearctic region
D.Palacarctic region
Ans:B

37.Movement of individual cells into the embryo or out towards its surface
A.Delamination
B.Ingression
C.Intercalation
D.Dispersal
Ans:B

38.A group of potentially interbreeding individuals of a local population
A.Cline
B.Sympatric species
C.Semi species
D.Deme
Ans:D

A.A
B.B
C.C
D.Z
Ans:A

40.Microcytic anemia is caused due to
A.Folic acid
B.Riboflavin
C.Vitamin-C
D.Iron
Ans:D

41.Success-entericus is secreted by
A.Goblet cells
B.Crypts of Lieberkuhn
C.Aciner cells
D.Oxyntic cells
Ans:B

42.Which is the function of DNA polymerase?
A.Transcription
B.Splicing
C.Capping
D.Replication
Ans:D

43.Sea Horse belongs to the group
A.Amphibia
B.Reptilia
C.Pisces
D.Mammalia
Ans:C

44.Which is a Protein sequence database?
A.EMBL
B.DDBJ
C.GenBank
D.Swiss-Prot
Ans:D

45.Most abundant immunoglobulin
A.IgA
B.IgM
C.IgG
D.IgD
Ans:C

46.How many groups of order 4 are there upto isomorphism?
A.4
B.3
C.2
D.1
Ans:C

47.The function f(x)={ (x sin 1/x, x not equal to 0)(first row),0,x=0(second raw) is
A.Both differentiable and continuous at x=0
B.Continuous but not differentiable at x=0
C.Differentiable but not continuous at x=0
D.Neither differentiable nor continuous at x=0
Ans:B

48.How many positive integers are there less than or equal to 150 which are relatively prime to 150?
A.40
B.42
C.38
D.44
Ans:A

49.The Fourier series of f(x)={-Pie,-Pie<x<0
X  0<x<pie converges at x=0 to
A.0
B.-Pie
C.Pie
D.-Pie/2
Ans:D

50.The inverse Laplace transform of a raise to 2/ s(s raise to 2 +a raise to 2) is
A.1-sin at
B.1-cos at
C.Sin at + cos at
D.Cos at- sin at
Ans:B

51.The general solution of second order equation x raise to 2 y raise to raise to ‘’+3 x y raise to ‘+y=0 is
A.y=(c 1+c2 x)e raise to –x
B.y=c1e raise to x+c2e raise to –x
C.y=c1x+c2x raise to -1
D.y=(c1+C2 lnx)x raise to -1
Ans:D

52.The value of lim x->0 1/x function x to x(raise to 2) e raist to t raise to 2 ,dt is
A.0
B.2
C.1
D.-1
Ans:C

53.The value of integral of complex function f(z)=e raise to z/z raise to 2-1 over the counter clockwise oriented circle |z|=2 is
A.2 Pie I sin h1
B.2 pie I cos h1
C.2 Pie I e raise to 2
D.2 Pie I e raise to -2
Ans:A

54.The general solution of partial differntial equation u(xy)-u=0 is
A.u(x,y)=c, e(raise to kx)+y/k
B.u(x,y)=c, c(raise to k(x+y))
C.u(x,y)=c,e(raise to kx-y/k)
D.u(x,y)=c,c raise to k(x-y)
Ans:A

55.The sum of series E(Autosum) raise to infinity,n=1 (6/(2n-1)(2n+1)is
A.2
B.6
C.3
D.4
Ans:C

56.The non-homogeneous system of linear equations in matrix form AX=B in ‘n’ unknowns has a unique solution if
A.Rank A=n
B.Rank[AB]=n
C.Rank A=rank[AB]
D.Rank A=rank[AB]=n
Ans:D

57.If F-3xyi-y raise to 2 j,evaluate funtion of c ,F(r) dr
Where C is the curve in the xy-plane y=2x raise to 2 from(0,0) to (1,2)
A.5/6
B.-7/6
C.-7/3
D.5/4
Ans:B

58.The area shared by circles r=2 cos theta and r=2 sin theta is
A.Pie-2
B.2Pie/3-1
C.Pie/4
D.Pie/2-1
Ans:D

59.If alpha,beta,gama are roots of the equation x raise to 3+a x raise to 2+bx+c=0,the value of E alpha raise to 2 beta is
A.3a-bc
B.3c-ab
C.3b-ac
D.-ab
Ans:B

60.For the function y=x raise to 4-4 x raise to 3+10,x=0 is a point
A.Local maximum and no inflection
B.Local minimum and no infelction
C.With inflection and no extrema
D.No extrema and no inflection
Ans:C

A.Hydrogen
B.Protium
C.Deuterium
D.Tritium
Ans:D

62.Hybridisation of carbon in methane is
A.sp
B.Sp raise to 2
C.Sp raise to 3
D.Sp raise to 3 d
Ans:C

63.The energy production in the Sun and Stars is due to
A.Nuclear fusion
B.Nuclear fission
C.Thermolysis
D.Photolysis
Ans:A

64.An element which does not exhibit allotropy
A.Oxygen
B.Fluorine
C.Sulphur
D.Phosphours
Ans:B

65.Organomagnetism compounds are known as
A.Grignard reagent
B.Wilkinson catalyst
C.Friedal Crafts catalyst
D.Grebbs catalyst
Ans:A

66.Global warming occurs mainly due to increase in concentration of
A.CO
B.CO2
C.SO2
D.SO3
Ans:B

67.Minamata disease is caused by---------poisoning.
A.Cd
B.Co
C.Hg
D.Pb
Ans:C

68.The carbohydrate which cannot be hydrolysed in human digestive system
A.Starch
B.Sucrose
C.Lactose
D.Cellulose
Ans:D

69.The main source of aromatic hydrocarbons is
A.Benzene
B.Coal tar
C.Natural gas
D.Petroleum gas
Ans:B

70.Bakelite is formed by the condensation of phenol with
A.Melamine
B.Glycol
C.Styrene
D.Formaldehyde
Ans:D

71.The temperature above which a gas cannot be liquified by applying pressure,is called
A.Boyle temperature
B.Inversion temperature
C.Critical temperature
D.Limiting temperature
Ans:C

72.Electrolysis of fused salt is used to extract
A.Silver
C.Sodium
D.Iron
Ans:C

73.Emission of light as a result of chemical reaction is
A.Fluorescence
B.Chemiluminescence
C.Phosphorescence
D.Photosensitization
Ans:B

74.---------------is used to provide inert atmosphere.
A.He
B.Ne
C.Ar
D.None
Ans:C

75.Isotonic solution have the same
A.Osmotic pressure
B.Vapour pressure
C.Atmospheric pressure
D.Internal pressure
Ans:A

76.In Wurtz reaction,the metal used is
A.Mg
B.Sn
C.Zn
D.Na
Ans:D

77.Peroxide effect is also known as
A.Steric effect
B.Kharasch effect
C.Electromeric effect
D.Markownikoff’s rule
Ans:B

78.----------is an example of natural fuel.
A.CNG
B.Coal gas
C.Water gas
D.Producer gas
Ans:A

79.Temporary hardness of water is due to the presence of ---------Ca and Mg.
A.Sulphates
B.Chlorides
C.Nitrates
D.Bicarbonates
Ans:D

80.The colour of phenolphthalein in the pH range 8.0-9.8 is
A.Pink
B.Orange red
C.Yellow
D.Colourless
Ans:A

81.Which of the states has the smallest Legislative Council?
A.Jammu Kashmir
B.Telangana
D.Pondicherry
Ans:A

82.Which amendment of Indian Constitution provided for annexation of the state of Sikkim?
A.33
B.34
C.35 & 36
D.37 & 38
Ans:C

83.Joint Sitting of Rajyasabha and Loksabha is presided over by:
A.President
B.Vice President
C.Speaker of Loksabha
D.Speaker of Rajyasabha
Ans:C

84.Constitution Day is celebrated in India to commemorate:
A.Formation of Constituent Assembly
B.Adoption of Constitution by Constituent Assembly
D.Birthday of Dr.B.R.Ambedkar
Ans:B

85.Purview of the legislation popularly known as Sarda Act was:
A.Practice of Sati
B.Widow Remarriage
C.Womens Education
D.Child Marriage
Ans:D

86.Juvenile Justice Boards were established in India in:
A.1976
B.1986
C.2000
D.2015
Ans:C

87.Sugamya Bharat Abhiyan is intended to develop:
B.Rural Communication
C.Facilities for Differently Abled persons
D.Facilities for Tribal people
Ans:C

88.State which paid highest wages under Mahatma Gandhi National Rural Employment Guarantee Programme in 2017?
A.Haryana
B.Kerala
D.Delhi
Ans:A

89.E-Pos is a software application designed for:
A.Postal System
B.Panchayat Raj
D.Public Distribution
Ans:D

90.Who founded the daily Al Ameen?
A.Vakkom Maulavi
B.Mohammed Abdur Rahiman
D.E Moidu Moulavi
Ans:B

91.Sthree Vidya Poshini the poem advocating womens education was written by
A.Brahmananda Sivayogi
B.Ananda Theertham
C.Chattambi Swami
D.Vaikunda Swami
Ans:A

92.Puthiya Manushyan Puthiya Lokam is collection of essays by:
A.M.Govindan
B.Kuttippuzha Krishna Pillai
C.Sukumar Azeekode
D.M.N.Vijayan
Ans:A

93.Who among the following organised womens wing of Atmavidya Sangham at Alappuzha?
A.Arya Pallam
B.Devaki Narikkatteeri
C.K.Devayani
D.C.R.Devaki Amma
Ans:C

94.The Chastity-trial of Nambuthiri women that prevailed upto the beginning of 20th century:
A.Anyonyam
B.Hiranya Garbham
D.Smartha Vicharam
Ans:D

95.Guruvayur Temple thrown open to the depressed sections of Hindus in
A.1932
B.1936
C.1946
D.1947
Ans:D

96.Rohingyas are mainly the residents of
A.West Bengal
B.North East India
D.Myanmar
Ans:D

97.Industrial group to construct the Statue of Unity in Gujarat:
A.Reliance
B.Larsen & Toubro
C.Tata
Ans:B

98.Dassault Aviation is company based in:
A.France
B.Germany
C.U.S.A
D.U.K
Ans:A

99.By profession Narendra Dabholkar was a
A.Journalist
B.Physician
C.Writer
D.Actor
Ans:B

100.Who won the P.F.A Players’ Player award in 2018?
A.Ngolo Kante
B.Mohammed Salah
C.Christiano Ronaldo
D.Harry Kane
Ans:B

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