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

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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

C.Naiadita

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

39.Which is the broadest DNA?

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

61.The radiosotope of hydrogen is

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

B.Lead

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

C.Andhra Pradesh

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

C.Birthday of Dr.Rajendra Prasad

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:

A.Rural Roads

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

C.Tamilnadu

D.Delhi

Ans:A

89.E-Pos is a software application designed for:

A.Postal System

B.Panchayat Raj

C.Public Administration

D.Public Distribution

Ans:D

90.Who founded the daily Al Ameen?

A.Vakkom Maulavi

B.Mohammed Abdur Rahiman

C.Vaikkom Muhammad Basheer

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 20^th century:

A.Anyonyam

B.Hiranya Garbham

C.Upa Samvada

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

C.Bangladesh

D.Myanmar

Ans:D

97.Industrial group to construct the Statue of Unity in Gujarat:

A.Reliance

B.Larsen & Toubro

C.Tata

D.Adani

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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