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Time: 3 Hours

fnrtructions to Cundidates :

3)

031 &797Reg.No

I Semester B.Sc. Degree Examination, August - 202t

MATI{EMATICSMathematics - I

(CBCS Semester Scheme)

L2L25

Maximum Marks : 70

Answer all questions.

Answer anY Five questions.

1) Define rank of a matrix A of order mxn '

(5x2:10)

2) Showthatthe systemof equations x+ 2y+ z =0, x-Zz:0,2x+y-32 = 0 has only

t

4)

trivial solution.

Find the nft derivative of sin- x '

tf u = xz y, prove that !+ = *.dydx oxoY

2I5) Evaluate : J sin* x dx '

6) Evaluate :6 x coss xdx.

7) Find the value of k such that the spheres x'+'y'+z'+Ax+lE+22+6=g and

i +y2 +22 +2x-4y-22+6-0 are orthogonal'

g) Find the equation of the right .o:rYi:one whose vertex is (t,z,l), axis is the

y - axis and serni vertical angle is 300'

E

zflsmJ0

lP.T.O.

ilffiililltllffiillllilllll

(3x5:15)

9) Find the rank of the

equations x+zy - z =3, 3x-y+?z=1, ?*x-2y+32 2 for

consistency and solve if possible.

11) Find the eigen values and corresponding eigen

12) State and prove Cayley - Hamilton Theorem.

13) By using Cayley - Hamilton Theorem, find the inverse of the matrix

III. Answer any Three questions.

14) Find the nft derivative of

rl2)

18)x

a,nd J'= . Also verify JJ' = 1 .a

(2x5:10)IV. Answer any Two questions.l

19) Obtain the reduction formula for Jcos'x dx -

20) Evaluate

tu0

21) Using Leibnitz's rule, evaluate -x sln ax dx, where a is aparameter.

I

(2)

_J by reducing to normal form.IL3

'11-l

:)

I

1-3

1

1

J

1 rl;)

x

(t+ *'

J

-1

(3x5:15)

2

i0

x

llll$lllll!illlffillllllll (3) LzLzs(2x5=10)V. Answer any Twg questions.

ZZ) Obtain the equation of the sphere which passes through the points (t,O,O), (0,1,0;,

(O,O,t) and having its centre on the plane 3x- y t z =2 '

23) Find the equation of the right circular cone which passes through the point (1,1,2),

has its vertex at the origin and'its axis is ;=+=iFind the equation of the right circular cylinder of radius 2 units and whose axis is

(2x5=10)Answer any Two questions.

25) Suppose in a stationery shop books, pens and pencils are sold with 3 books, 2 pens- unal pencil cost Rs. l4},zbooks, 2 pens and}pencils cost Rs. 170, I book, 3 pens

and 2 pencils cost Rs. 180. Find whether each item has a fixed price or each item

has different prices or it is not possible to find the price of the items.

26) The population grows at the rate of 5oh per year. How long does it take for the

vI.

27)

population to double?

A particle of mass 3 units is moving+ ^\ i =1+t+r')?+ st')+(t +z)i. Find

i) Themomentumand

ii) Force acting on it at t =2.

along the space curve defined by

*-1: y+3 _z-22-1 5

CI107765 1..1122llilillLllilllililililllill

I Semester B.Sc. Degree Examination, August - 202L

CHEMISTRYChemistfy - I

(cBcs Semester scheme 2018-19 Onwards Repeaters Prior to 2020-21)

PaPer : I(old)

tr--Time : 3 Hours Maximirm Marks : 70

Instructions to Candidates :i) The question paper carries two Parts. Answer both the Parts.

ii) Draw diagrams andwrite chemical equations wherevernecessary.

PART . A

Answer any Eight questions. Each question carries 2 marks. (8x2=16)

,

Differentiat e J X with resPect to X

Define Collision number and Collision frequency of gas molecules'

Write mathematical expression ofMaxwell - Boltzmann equation forvelocity distribution

per gas molecules.

State Stark - Einstein law of photochemical equivalence.4.

5.

6.

7.

8.

'9.

10.

11".

t2.

Reg.No

Define critical temperature of a gas.

What are completely miscib.le liquids? Give an example'

Mention the factors which affects the viscosity of a liquid

What are chalcogens?

Define equivalent weight of an oxidizing agent'

What are cumulated dienes? Give an example'

Explain Wurtz reaction with an examPle.

What are Cycloalkanes? Give an example'

[P.T.O.

-

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PART - BAnswer any Nine questions. Each question carries 6 rnarks.

11122

(9x6=54)

(4+2)

(4+2)

13' a) i) What are exact and inexact differentials? Give one example for eachii) If log5 = 0.6990 and logT = 0.9451 find the value of log35.

b) Integrate cosx with respect to x.

14. a) Describe Linde's process for the liquification of air,

b) Calculate average velqcityMror.:44x10-t Kg) .

of Co2 gas molecules at 3I0k (R = g.3l4J I K / mol ,

(4+2)

Explain C agniard delatour's method of determining critical temperature an d criticalpressure of a gas.

Calculate critical tem-perature of Nitrogen gas (given Vandenvaal,s constantsa=0.l408Nmamol-z, b=3.91x lTam3mol-l'R=g.3 t4J lK lmol) (4+z)

15. a)

b)

16. a) Explain the terms Fluorscence and phosphorescence.

b) What are chemical sensors? Give an example.

17. a) Explain the determination of molecular mass of a solute by Beckmann,s method.b) write Sudgen equation and explain the tenns involved in it. (4+2)

18. a) Explainthe Principle involved in steam distillation? Give its applications.b) A solution containing 2.4xtO-3 kg of a.solute dissolved in 2'.5 xl0-3 m3 of water

gave the osmotic pressure of 2.43lxl0s 1t{m-2 at 300k. Calculate molar mass ofthe solute (+Z)

20' a) Compare the reactivities of carbonates of alkali and alkaline earth metals witli anexample for each.

b) What is Atomic radius? (4+2)

19' a) What is electronegativity of an element? Explain the determination ofelectronegativity by pauling,s method.

b) Why the radius of cation is srnaller than the corresponding atom. (4+2)

ililfiillilffiil[ililffiiilt

a) Define the terms:

i) Accuracy.

ii) Precision.

iii) Significantfigures.

iv) Errors.

a)

b)

a)

b)

Horv is alkene converted into an alcohol by Hydroboration reaction?What is Diel's - alder reaction? Give an example.

compare the stabiliry of alkyl carbocations based on Inductive effect.What are carbenes? Give an example.

(3) 11122

)',

23

(4+2)

(4+2)

a) Explain Baeyer's strain theory of cycloalkanes? Give two limitations of it.b) What are elimination reactions? Give an example. (4+2)

25, a) Drarv the Newmann's projection fonnulae for conformations of n - butane. Whichis the more stable form.

b) How are alkanes prepared by Corey - House method? (4+2)

I

fr2?6646ililililLiltflrffitlfilflflflt 1112s

Reg. No

r semester B.A/B.sc. Degree Examination, August - 2021COMPUTER SCIENCE

Programming Concepts Using C(CBCS Scherne 2015-16 Onwards F + R)

Paper: ITime : 3 Hours Maximum Marks : 70Instructions to Candidates :

Answer ALL Sections.

SECTION - AI. Answer any Ten questions. Each question carries 2 marks. ( l1x1=2g)

1) What is a software? Mention its types

2) What is an algorithm?

3) What are constants? Give example.

4) What are local and global variables?

5) Mention the different data types available in C.

6) Write the difference between : and :: operators.

7) what is the difference between IF and swITCH statements?

S) What is a string? Give example.

9) What is a called and calling function?

10) Give example for getchar0 and putchar$ function.

11) What is a pointer?

12) Mention any tw'o preprocessor directives.

SECTION - BII. Answer any Five questions. Each question carries 10 marks. (5x10:50)

t3) a) Write a Flow Chart to find largest of 3 nurnbers.

b) Write the different relational operators and give an example for each. (4+6)14) a) Explain w'hile statement with an example.

b) Write the structure of a C program and explain the various sections. (5+5)l5) a) Explain different fonns of if sratement.

b) What is an array? Explain the different lypes of arrays with their syntax andexample. 6+4)

lP.r.o.

(2)

Write a C program to find sum of two matrix using affays

11L25

Explain any 5 string handling functions with example' (5+5)

Explain Function with argument and with return value. Give example'

What is recursion? Write a program to find factorial of a number using tttul;';l;

What is the use of

i) goto statement

ii) break statement

iii) exit statement

iv) return statement

v) continue statement.

Explain any 2storage classes.

What is a structure? How do you declare and initialize a structure?

Write the use of 'i) typedef

ii) enum.

Write the different file accessing modes with theirmeaning.

What is a macro? Mention the various types of macros'

(s+s)

(s+s)

(s+s)

18) a)

a)

b)

20)

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16) a)

b)

r7) a)

b)

0 21813 5 1212L

Maximum Marks : 70

ililfiilililill||l!lilffi|

Time : 3 Hours

Instructions to Candidates :

Reg.No.

I Semester B.Sc. Degree Examination, August - 2021

PHYSICS

Mechanics and Properties of Matter

(CBCS Semester Scheme Freshers )Paper - I

1

2

1) All muitiple choice questions in PARI - A are to be compulsorily answered in Page-l.

2) Non - programmable scientific calculators are allowed'

PART-A

Answer ALL questions. Each question carries ONE mark' (10x1=10)

A force of 36N acts at an angle of 600 with the horizontal on a block of mass 18kg, the

accelerationproducedintheb1ocka1ongthehorizontaldirectionis

a) 5 ms-2 b) 3 ms-2 c) I ms-2 d) 2 ms-2

A vehicle is moving on a rough road with uniform speed along a straight line, then

a) No force is acting on the vehicle

b) A force must act on the vehicle

c) An acceleration is being produced in the vehicle

d) No work is being done on the vehicle

The maximum value of static friction is called

a) Limiting friction b) Rolling friction

c) Normal reaction d) coefficient of static friction

Work done in holding a mass of 50kg at a height of 2m above the ground is

a) 251 b) 100J c) Zero d) 980J

Ifthe momentum of abody is doubled, its kinetic energy is

a) Doubled b) Halved

c) Quadrupled d) Unchanged

Aball is being projected upwards. As it rises, there is increase itr its

a) Momentum b) Kinetic energy

c) Potential energy d) a and c

3

4.

5.

6.

lP.T.O.

Iffiltililillrililililriltril 12121

7.

8.

9.

10.

11.

t2.

13.

14.

15.

16.

17"

18.

19.

20.

21.

The moment of inertia of a body does not depend on

a) angularvelocity ofthe body b) mass ofthe body

c) distribution of mass of the body d) axis of rotation of the body

Aparticle is executing SHIvI of amplitude 4crn-, time period 12s. Time taken by the particlefor 2cm displacement from its mean position is

a) ls b) 4s c) 3s d) 6s

Surface tension is due to

a) Adhesive force b) Gravitational force

c) Cohesive force d) Elastic force

The viscosity of a liquid

a) increases with temperature b) decreases with temperature

c) does not depend on temperature d) depends onthe liquid

PART.BAnswer any FfVE questions. Each question carries TWO marks. (5x2:10)What is inertia of a body? What does it depend on?

What is Foucault's pendulum? Mention its important application.

Write a note on work done by a constant force.

Distinguish between inertial and gravitational mass of an object.

Mention the expression for the moment of inertia of a rectangular plate about an axisperpendicular to its plane and passing through its centre and explain the symbols.

Derive an expression for the instantaneous velocity of a particle executing SHM.

What is deforming force? Which property of the body resists deformation?

Define co - efficient of viscosity and mention its SI unit.

PART - C

Answer any FIVE questions. Each question ca-rries 6 marks. (5x6:30)

a) Distinguish between inertial and non inertial frames of reference.

b) Arrive at Galilean transformation equations. (2+4)

What is an ideal Atwood machine? With a relevant diagram, arrive at the expression forthe acceleration of a system of two masses connected by a long inextensible string ofnegligible mass run over a frictionless pulley. (6)

Arrive at the expressions f,or the velocity of two bodies of different masses undergoingone dimensional elastic collision. Also show that the velocities are just interchanged incase of equal masses. (6)

i2)::,

l-i

23.

(3) 12121,

7) a) State and explain Newton's law of gravitation.

b) State Kepler's laws of planetary motion. (3+3)a) Define angular velocity and angu.lar acceleration.

b) State and prove peqpendicular axis theorem.

What is a compound pendulum? Arrive at the expression for its time period. O.rll

Define surface tension of a liquid and the angle of contact. Mention the factors that affectsurface tension of a liquid (6)Derive an expression for the couple per unit twist of the material of a wire fixed at oneend and twisted at the other. (6)

PART. DAnswer FouR questions. Each question carries FIVE marks (4x5=20)

27. A block is placed at the top of an inclined plane 5m long. The plane makes an angle of600 with the horizontal. If the coefficient of friction between the block and the plane is 0.3,using free body diagram, find the acceleration ofthe block.

28. A stone of mass 4.5kg tied to one end of a string of length 2m is set into circular motionholding it at the other end along a horizontal plane by whirling. If the stone completes 40rotations in one minute, find the centrifugal force that balances the tension in the string.

29. A cricket ball ofmass 5009 travelling at a speed of20ms-1 is caught by a fielder and in doingso, he withdraws his hands back through 40cm. Calculate the work done by him and thiaverage force exerted by the ball on his hands.

30. A satellite of 1000kg is supposed to orbit the earth at a height of 2000km above the earth,ssurface. Find its orbital speed and kinetic energy. Given: G :6.67 xl)al Nm2 kg-2 , Mass and

radius ofthe earth are 6x102a kg and 6400km respectively.

31. A circular disc of mass 4kg and diameter 0.2m initially at rest attains an angular velocityof 400rpm in 5s. Find the torque on the disc.

24.,<

26.

32. A body of mass 1kg is executing SHM according to the equation ./ = 6cos

Determine its amplitude, frequency and maximum kinetic energy.

33. A mass of 5kg is hung using a steel wire of diameter 2mm and length 2m. Find theextension produced in the wire. Given Young's modulus of steel =20xl}to Nm-2 .

34. An iron ball of radius 3mm falling through a column of oil of density 940kgma attainsterminal velocity 5x10-3rus-r. Find the viscosity of the oil. Given density of iron is7800kgmr.

rcu-L4

cm

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Iililil ilff Iilil tffiI llilt ilil lill 205675 3311 5

Reg. No.

r Semester B.sc./B.s.R.s. Degree Examinationo August - 20zldq6 eroao dg*dd+d qrrfiE *ao

(CBCS Scheme Freshers only)Paper : I

Time : 3 Hours Maximum Marks : 70

I. oe$ 5idorleri ilEO? md.rlse erug:otu. (5x2:10)L uoa$d e:d>So3odeq deri?

2. de$d e,JlD sdd a$drl clmoorcb e;o6dd:t

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0[4,3]_92Illlrililllllilililfililllll 33101.

Reg.No

I Semester B.Sc./B.C.A./B.Sc.(FAD) B.V.A. all' other Degree

Examination, August - 2021

ENGLISHLanguage English

(CBCS Scheme Freshers)

Time:3Hours Paper-I

MaximumMarks:70

Instructions lo Candidates :1) Answer all the questions.

2) Write the correct question numbers.

PART . A

(Grammar Section - 30 marks)

Do as directed.

1. Use the verb in brackets in the appropriate tense form and fill in the blanks:(5x1:5)

(be) quite familiar with this locality

(pray) for her recovery all of yesterday evening.

(learn) magic for five years.

d) He (study) French at college.

e) She (like) Masala dosa for her breakfast.

2 Insert the appropriate articles in the sentences given below. Put a cross mark [X] in

the blank where articles are not required. (4x%:2)

a) We are spending our holidaYs in Philippines this summer.

b) The workers have formed union.

I

a)Ib)rc)I

c) o'I cafl'tmove this table, will you please give me

3. Fill in the blanks with appropriate prepositions:

hand?".

(4x%:2)

A lion was sleeping a forest. A mouse started playing it. The

lion was disturbed and arose his sleep. It caught the mouse and tried

crush it to death.

lP.T.O.

-l

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4. Insert the appropriate question word in the branks:a) _ shade do you want?b) book is this?

5. Insert appropriate question tags in the blanks:a) You can attend the meeting

33101

(2xl:2)

Qxl=2)

b) She is coliecting markers,II' write a Descriptive paragraph not .*...ffis sentences on the scenic view of Nandi

hills, usin_e the hints given below: ( I x5:5)a) Location and landscape.

b) Temples.

c) TipuDroppoint.

III. Read the following paragraph carefully and do as directed: (1x1:1)a) Find a suitable topic for the passage.

b) Make notes using heading/sub-heading wherever necessary. (1 x4:4)The small village of somnathpur contains an extraordinary temple, built around1268 A'D. by the Hoyasalas of Karnataka-one of the most piolific temple-builders.Belur and Halebid are among their-better-known works. While these suffered duringthe invasions of the 14th century the Somnathpur temple stands more or less intactin near-original condition. This small temple captivates with the beauty and vitalityof its detailed sculpture, covering almost every inch of the walls, pillars, and evenceilings. It has three shikharas and stands on a starshaped, raised platform with 24edges' The outer walls have a profusion of detailed carvings: the entire surface runover by carved plaques of stone. There were vertical panels covered by exquisitefigures of gods and goddesses. With many incarnation, b"ing depicted. trr.r. *.r.nymphs too, some carying an ear ofmaize (a symbol ofplenty and prosperity). Theelaborate ornamentation, very characteristic ofHoyasala scu$tures, is aremarkabiefeature. On closer look - and it is worth it - the series of friezes on the outer wallsrevealed intricately carved caparisoned elephants, charging horsemen, stl,lizedflorvers, rvarriors, musicians. crocodiler, uni swans.The temple was actually commissioned by Soma Dandanayaka or Somnath (henamed the village after himself), the minister of the Hoyasala king, Narasimha theThird. The temple was built to house three versions ofKrishna. The inner Center ofthe temple was the Kalyana mandapa. Leading from here were three corridors, eachending in a shrine, one for each kind ofKrishna-Venqgopa la,Ianard,ana and prasannaKeshava, though only two remain in their original form. In the darkness ofthe sanctumSanctorum , I tried to discern the different imbges. The temple's sculptural perfectionis amazing and it includes the doors ofthe tempL and the three elegantly carved towers.

Il|ililtffiililtiltililililil (3) 33101ry choose the right contraction and rewrite the full sentence : ( zx1:2)

1. a) I have been studying for hours, but I still do not feel ready for the exam.

(I've;l h've)

b) We would go to the beach with you.

(We w'd, We'd)

2. Prepare a dialogue between two college friends meeting each other after five years.The dialogue should not exceed 5 to 7 sentences: (l;3:3)

3. Add the right prefix or suffix to the following and complete the sentence.( lxp=z)(Slight, slide, fertile, test)

a) The _ of,the land was by the agency

OR

b) Find one word substitutes for the underlined phrases and rewrite the fullsentence:

V.

(Interestingly, extempore, utopia, souvenir)

i) He spoke spontaneousllz without preparation.

ii) I want to keep this ring as a remembrance of this dalz

PART . B(Literary Section - 40 marks)

Answel any Five ofthe following questions in not more than Two sentences each:(5x2=10)

1- What are the different expressions of freedom that. Sundar Sarukkai talks about inthe article, "'When Free speech is truly Free,?

2. What rights of the common man does the poet refer to in the poem o'Democracy,,.

3. What is the "great gift'given by the founders toAmericans as mentioned in "FarewellAddress at Chicago'l?

4. Why did the 'Producers Research' declare the unknow n citizensensible in the poem"The unknown Citizen"?

5. Why are the people of Hatthus described as 'a detached lot', in the story ,.Thegolden Dream"?

6. what is the defect in the bomber in the poem "FromA German wen primes,,?

lP.r.o.

.,1

+

7 . What game was played by the as depicted son and the father? Who was about to win in

the story "The Mo,nkeY's Paw"?

VL Answer any Four of the following questions in about L5 sentences each. (4x5=24)

1. Elucidate the characteristics ofthe 'highly placed' and 'lovely' people as depicted in

the poem "From a German War Primes"?

2. Analyse the conditions/limitations that the poet speaks of,, in ushering Democracy'

3. How does Sundar, Sarrukai describe criticism as a duty in the article "When Free

speech is trulY Free"?

4. What did sergeant Major Monis have to say- about the magical powers of the

onkey's paw, in the story "The Monkey's Paw"?

5. Describe how the activities happening on the forest road and the irnagination in

Ramesta'smindweretwodifferentdistantworlds?

6. How do the different departments analyse the unknown citizen in the poem " An

unknown Citizen"?

7. What happened to Herbert at did the Maw and Meggins? What was the company

offer as compensation?

VII. Answer any One of the following in not more than} pages: (1x10=10)

1, As observed by obama in "Farewell Address At chicago", Democracy draws its

strength from the collective involvement of .a11 its citizens and not merely on its

princiPles. Elaborate.

2. The poet has given a holistic picture of the interdependent roles of citizens attitudes

and conditions for a democracy to emerge in the poem "Democracy" Discuss'

3. {hat tum of events led to Mr white's second and third wishes, in the story "The

MonkeY's Paw"

I ll]] till il1il tilt t!ililil lill 11103Reg.No

I.

I Semester B.Sc./BSRS Degree Examination, August - 2021

HINDIGadya, Arth Grahan Aur Anuvad

Paper - I(CBCS Semester Repeater 2016-17, 2017-18 & 2018-19 Scheme)

Time : 3 Hours Maximum Marks : 70

II

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11103

(1x16-16)

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1. qq{tl

2. frrtt

3. *qtV fufdfu s{Edq rat qqol ++ ftR.rq vrfr * sm ftfoqt (10x1-10)

rT5rir eaiT ufircda 66 tr gg6r sqrAur t- sr*{ qrf, t qd en re {Tm qfiER fi qfisrA 6T

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5. gl*{ qra { qa} qr qroq-dqur *+ q'l rdr Er?

6. qqI olh gqr ft& *} firyd] tnT TFT 6& ftreat t?

7 . ri5m qfiIaR ffi ftq er6a ti8. {gffi qfiqn it 6h rft qrd{rE q{rfr t?

I tflt ilil lllil lill ilil llll llll

9. {Tm cReR qfu q1 GF€+ ilrnn t?

10. {gffiqnHR{*qHrttti

(3)

VI frEIfdfu rrd qr ffi { qf{c *Fqqt

1. Irnrnunity

2. Medicine

3. Vaccination

4. HealthCentre

5. Spinal Cord

6. Gravitation

7. Pollution

8. Weather

9. Surgery

10. Disease

11103

(10x1-10)

ililililIillilffillllffiilil01$058r

Time : 3 Hours

Instructions to Condidates :1) Answer all the questions.

2) Write the question numbers correctly.

Reg.No

Semester B.A./B.Sc.lB.C.A./B.Com./B.B.A./B.H.M.IB.V.A./B.Sc'(FAD)

Begree Examination, August - 2021

ADDITIONAL ENGLISH

(CBCS Scheme Freshers)

Paper - I

32110

I.SECTION . A

Answer any Five questions in one'or two sentences each (5x2:10)

1. What does Gajala encounter when he goes to the forest?

2. Who was Mohana swamy's friend? How did he help him to come out ofhis loneliness?

3. Which instances cited in the lesson, 'The Letter'Proves Ali's talent as a shikari?

4. What disease did Dittu's wife contract? What is the reason attributed by Dittu for it?

5. In the poem 'Nila', what is the anger of the river compared to?

6. According to the poet, what lies in a trance in the poem. 'Our casuaring Tree'?

7. Mention the significance of the news carried by the weekend newspaper, in the

poem'Moonrise'.

8. According to Judy Brady, name any tw-o expected responsibilities of the rvife r'vith

respect to her children?

Answer any Four questions in about a paragraph of 120 words: (4x5:20)

1. Explain the method of making charcoal used by the villagers in the lesson 'The

Rogue'.

Z. Give an account of Mohanaswamy's social life when compared to his friends.

3. Why was visiting the post office a pilgrimage for the old man in the story, 'The

letter'?

4. In what way is the river Nila, a 'giver of wealth'?

5 . Write a short note on the images of the Casuarina Tiee' at dawn as portrayed by the poet.

6. Discuss about 'another story' told by the grandmother to her grandchild in the poem.

lMoonrise', Explain the significance of it with reference to armstrong and Aldrin'lP.T.O.

Maximum Manks : 70

ilflfililIlflillilil[ilililt (2) 321-10

III. Answer any Two questions in about Two pages each: (2x10=20)

1 . What damages had the rogue elephant caused around the village and what precautions

did the villagers take against this, to protect themselves?

2. Discuss the incidents which led to the postmaster's change of heart in the story 'TheLetter'and give reasons for it.

3. Describe the nature of the river Nila, during the flood.

4. How does Judy Brady define ' a Wife' or 'being a Wife' in the lessonjwhy I Want

a Wife'?

SECTION . BIV. Read the following passage and answer the questions set on it. (1x10:10)

Ifyou thought social work is just another fad among teenagers, think again. o'When adults

spoil our world, it is we who have to take things in our hands," says l4-year old priyaSrinivasan. a class IX student

Pnyais involved in literacy campaigns. And she is not alone. Thousands ofteenagers are

spending 5 to 6 hours every week in some form of social activity.

A quick count of the various social cause campaigns launched over the past few years is

noteworthy. From the Swachh Bharath campaign to the Yamuna Project, from Green

Delhi to no-firecrackers and, of course, the highly successful ban-pol-v bags campaign

have all been spearheaded by people in the age group 14 to 19.

Why are teenagers spending time greening the cigu, cleaning rivers and talking to lonely70-year-olds? Says 16 years-old Shruti Grover, "Everyone has a responsibility towards

society and if we don't help each other who will?".

A big boost to teen social activism has been the involvement of schools and principals

who've allocated time within school hours. Sujatha Manoharan, Principal, Jnana Deepthi

School, believes, "social workhelps children realise they have aresponsibility towards the

less fortunate".

At many schools, from Blue Bells to Laxman Public School and St" Mary's to St. 'fhomas,

welfare activities like the"literacy drive are part of the curriculum. So is the adoption ofslum clusters located near the schools where students teach, conduct workshops and celebrate

festivals. A few Schools like Modern Public School and D.A.V Public School are also seen

playing active role in organising Pulse Polio Campaigns and other health camps. Theyoung children give the down-trodden people a ray of hope and work hard for them tochange their lives. That's how the Cool Teens did social activism w'herever they go.

At the government level, Delhi state government has also reached out to teenagers. In the

Bhagidari Project we tried to involve children in the anti-cracker campaign. Now r,ve want

their involvement in ensuring people fasten seat belt in cars," a official said. Students are

-.t

a-).

4.

Publicslum dwellers on the

"When children say something parents listen" says the official. Thank God for that.

l. Name two projects spearheaded by teenagers.

2. According to shruti Grove4 why are teenagers spending time in doing social work?How did the teen social activism get a big boost?

What kind of welfare activities do some schools conduct?

5. The teenagers are involved in the goverrment level also. Explain.

5. Choose the correct meaning for the word ,Launched,.

a) Put into action.

shift

Finale.

c) Lock

[Jse the word 'campaign' in a sentence of your own.

The suitable title for the above passage is -cool teems/Social Work/Flealthy Life.Choose the right option.

Frame sentences of your own with the following set of words to bring out the

b)

V. Write a paragraph on the topic 'Healthy Lifestyle' in about 80 to 100 words. (S)

VI. Imagine you are interviewing the state Health Minister, for your weekly magazine. Frame

1-

IIilIllililllfllLlllfitillil (3)321'1,0

7.

8.

9

I ilfl! llilllilll llil lilllllll ilff

Reg.No.

IIIIIN Semester B.Sc.[B.A./B.C.A. Degree Examination, August - 2021

ENVIROI\MENTAL STUDIES (AECC)

(CBCS Scheme 2017-18 Onwards ) (Non-Core)

Version Code

TimeAllowed:3 Hours Ma-rcimum Marks : 70

90002

AQuestion Booklet Sl.No.

cE 02S 42L

1

)

J

4

5

INSTRUCTIONS TO CANDIDATES

Immediatelv after the commencement of the Examination, you should check that thisBooklet dods not have any unprinted or tom or missing pagel oritems, etc. If any gf !!eabove defects is found, gi:t it replaced by' a CompleteQuestion Booklet of the availableseries.

Write clearly the Question Booklet Version Code A, B, C, D or E, in the appropriate space

provided foi the purpose, in the OMR Answer Sheet.

Enter the name of the Subiect, Reg.No., Student ID, Q.P. Code, Question Booklet ver-

sion code and afflrx sienat;re 6n t[e OMR sheet. As tlie answer sheets are designed tosuit the Optical Marli Reader (O.M.R.) system, special care should be taken to fillthose items accurately.

This Question Booklet contains 70 questions carrying equal marks. All questions must

be attdmpted. Each question contains four answers, among themlne correct answershould b6 selected arid shade the corresponding option in the OMR sheet.

All the answers should be marked only on the OMR sheet provided and only wilh,ablack or blue ink ball point pen. If moi'e than one circle is shadediwrongly shaded/half

shaded for a given question ^no

marks will be arvarded.

Questions are in both English and Kannada.^I{ any confusion arises in the Kannadavtrsion, please refer to the English version of the questions.

Immediately after the final bell indicating the closure of the examination, stop llakinganv further markinss in the OMR Answer-Sheet. Be seated till the OMR Answer Sheet is

coilected. After ha"nding over the OMR Answer Sheet to the Invigilator you may leave

the examination hall.

6

7

ti#,fri : finddt€ @ ofu d* ar€id boePorlde) lP.

llfiilllilflililililtilIttfltflt ;'90002

Maximum Marks : 70

Reg. No

r/rrlN Semester B.Sc/B"A./B.C.A. flegree Examination, Augu st - Z02lENVTRONMET{TAL STUDTES (AECC)

(CBCS Scheme Z0l7-lB Onwards) (Non-Core)

Version Code

ATimeAllowed:3 Hours

l.

6.

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Note English ver,',1 rcn of he nstructians ,,1 printed on the front page of this booklet,t

I

.l,,1

I

dodiDd uo8d: frou3dladAql

erudd

fflillllllllllilltflllllllllil (3) e0002

l' The averaee rveather conditions in given place over longerperio4 of time is calledA) Season B) Weather

C I Atmosphere D) Climate

eor{ {sdg iuoio dumdod do,q6gns&d ddoJ:enrb3d.

B) daodnd

2. In air, amount

A) Wind B) Humidity

D) Temperature

A)

?Jd

r$s3

Percentage

BothAandB

B)

D)

1

B)

D)

B)

D)

B)

D)

A)

c)

(Set -A)

A) 006€

c) db$

A) Degree Celsius

C) DegreeFahrenheit,

soddJadd$u beri eedo$sr d)cb.

A) dd& dOo$xr^J

C ) dde +?ddo' beotr

rr09o$9, OeOd e:Ad) gidoeoddlo &erl dflerdOienAd.

4- Important elements that can affect climate includes

A) Drougtrt B) Temperature

C) Rainfall D) Both B and C

durododd a3:eej doeaaab aecbd dd,$ erodrlgc deod.

C odd.n

rP.T.O.

llflillilllilllillllilillllllill s)

5. Which ofthe following is not a greenhouse gas.

A) Ao3:oan Cguloraef

C) diaoqfatef CguSoaoer

90002

A) Oxygen B) CarbonDioxide

C) Ozone ) WaterVapour

d* d$jndd)dsg oJrodcb d,x$$d erOe-:dg.

A) uf,asif B) aoe^.rrdf d, erflrco'

C) t dfoean D) ,to[3d sC

6. The protocol related to Green House Gas emissions is

A) Vienna Protocol B) Kyoto Protocol

C) Montreal Protocol D) Cartagena Protocol

$eif dr eCIe d.rDdnroxbadrl ioe^.loQ&C d,o,eoloeaef.

B) floreu:-oe *ed,eaef

D) reuirdan Cgeuloeuoef

Which ofthe following is the natural source of pollution?

A) Storms B) Precipitation

C) Volcanic eruptions D) None of these

dr EqJndd)r1$9 oJmdc$ dooddd drinrd droe-:auoAd?

A) a)d>na9rl9c B) c)s

C) agendra) d,oeosrl$;

t

i

(Set - A)

D) qdrlsg c3adco .ag

IilTTI' (s)

& Noise pollution limit in industrial area is

A) 6sdB

c) TsdB

drrnoao gideddQ da; d:aOdd eDg

A) 6saa3

c) 7sa?,3

B)

D)

B) 9sGD

D) 100as

90002

9sdB

100dB

9.

1rj

xroafo ab$ &?-2 _ aoe$ ddc3:enri:d^d.

A)

c)

A) deJad ep&e:

C) f,o erOe-:

- i'r,5Yo

c I r,._r, o

.add$g o$Dddo .ag

B)

D)

B)

D)

: a1.9C^, \-/ (,

11

rne,i;-;? uQalddd dedaoaocbaa

A) 0.s% B)

c) 0.3% D)

B)

D)

-qvWN

9. r -.<5a9

^Jc^JCV'a) B)

D)

B) 0.8%

D) 2t%

0.8%

21%

Petrol

Diesel

A)

c)

do3geer

aedefJrc1z{ ^..(J\-/1, \^Jc.o

lP.TO.

,

I ltffi lilll tilll ilfl ilIil llil ffl

12. Good example ofrenewable energy is

13. Bhopal gas tragedy occurred inthe

A) le83

c) 1994

A) le83

(6)

A) oit B) Hydroporver

C) Coal D) Irlone of these

do)edOde^.ld:oad dSc$ erud$ eruo-oddd

A) erdoe, B) >, p ri3wV(./ 'J

C) dOdo:L, U D)

"drrsg oJo{cro ng

1995

D) te84

B) tees

c) tee4 D) te84

14' Energy obtained from the earths hot interior is caled

A) Geothermal energy B) Bioma_ss energy

C) Water energy D) Tidal energy

eJ.oaoot a& e-gz;nrlood ddd dgo$$* ddobenrbdd.

A) af,oao$d dS B) dedoag dS

c) &eod d3 D) wqd'edd de

(Set -A)

90002

ddrdO eioeaaef erOe,: u3:dod doqJetd.

(

(7)

15. The major carbon storage reservoir in the carbon cycle isA) Oceans R\

^B) Atmosphere

C) Rivers D) Tiees

900a2

A) mrldrlg;

C) ieri9:

16. BOD stands for

A) Biochemical oxygen demand

c) Biochemical occupied demand

Biochernical occupied date

None of these

dedcroxooi&d eilOod Ooaod

"adrisg also{clo ng

B)

D)

do6oddro

aJ:drlSo

BOD oodd.

A) detooxoo$Od ueasddd ejeGd B)

C) dedooxoc$&E u3itud ejeGd D)

77. Which of these is a pollution parameter

B)

D)

B) High CoD

D) All of these

A)

c)

HighHardness

HighBOD

A)

c)

foa;€ Ddd$d erzdoBerorbdd

A) 20 droztrr

c) 20 agef

"dd$g oiDdcb dneddd Oc$eood

A)

c)

ddlidd

Sparrow day is observed on

B)

D)

d, lz",acr{or{^cl\:pYr^99

18.

(Set - A)

B) 20'h June

D) 18th June

B) 20 airodf

D) 18 eiroor

lP.T.O.

!-

t

e0002

qcroed dEdgd dfu$ "Aonoe.:d dea)dmo alerodo$

I il!ilt llil] tilfl tilil tilfi tffi llll

19. Eutrophicationmeans

A) Waterpurification

C) Neutralizationofwater

90002

A)

B)

c)

D)

A) ArthurThnsley

C) JagadishChandraBose

A) erdrd oro^dO ^f'

C) agrlOeef dod ai-oes"

B) Wasteu,atertreatment

B) Aristotle

D) JohnMendel

D) Enrichments ofplant nutrients in waterbodies

60"e3^ Ded: ioX,O#ooo

Seod dtl^6eddeo

rodlroerl$gd Bd, Coed6oodrl9 a3l.$eddeo.

B)

D)

eoEEt,3ef-)

^-< J- ^J^x(.i1JcJ- c^!UC9ir'

dod, -drb" a$d: qrdrl$; tdgd,o e.rr)ero

B) Herbivores

D) Camivorous

B) iiraao

D) C;ooaoaaO

(8)

21. Deer, Bison and Elephants are all examples of_

(Set - A)

02

lter

r lilifi lilll ililililt tilfi ilillilt

22. The primary source of energy is the

(e)

Tidal energy

Bio energy

90002

A) Solarenergy

C) Wind energy

dSo$ a3dtud dr.oe-rdodd_A) sd ds

c) rL9 56

B) ert?rd&pdd dS

D) deJed ds

B)

D)

23. A Grazing food chain starts with a

A) Producer

C) Consumers

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- JJJ.

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D) xo*rdorxrr

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Scavengers

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B)

D)

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c)

21. A network ofinterconnected food chains is calred

A) Foodweb B) Chainweb

C) Web cycle D) Ecosvstem

erodirod8rd e,6od iddgds zroe,:d&, ddoi:enrbdd.A)

C)

B)

D)

25' A series of organism through which energy is transferred in form of food is called

s6dd drDddg dqo$$d dmrorr,:d deorrg ndsdc$$4 ddoj:encr:dd.

A) Foodchain

C) Foodweb

B) Foodpyramid

D) None of these

B) es6d .bdfucs'

D) "aarddo

erg

A)

c)

(Set - A)

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qbcs' detr

[P.TO.

t._

t|||ffi||iltil|l|ilililflffill|| (r0) 90002

26" Ilhytoplankton-+ Zooplankton-+ small fish-+ large tish is an example of

A) Aqua.tic ecosystem B) Terrestrial Ecosystem

C) I)esert ecosystem D) Tropical ecosystem

dsu3-oapcX;r -+ dpoqq.jolff -, n* &oed) + d,a€ eoenbrlqt "d{

$imddd.

A) ?JUarotu dDHd t dB B) qjJatuc$ doid drd*

C) ab*6raer doid drd{ D) w{doo3:d dold drd{

27. Which of the tbllorving is abiotic component?

A) Mushroom B) Algae

C) Bacteria D) Humus

rasrrl*O cjn6)ej: erdedE codEroRd?a:.

A) d:dgdtr B) anzs

c) ?,5o#ooJIo D) dJard)xf

28. An ecosystem consists of

A) Only biotic Cornponent

C) Uoth Aand B

dtJfr C #*o{c$: e",qlrtooad

A) Eede dded dEsd

c) A abq Il "rdu$.n

B) Only Abiotic ComPonent

D) None of these

B) drog erdcieet^3d atododoe,f

D) qdil*g cJFd-.o .ag

5\ i

(Set - A)

lilillffitilitffiltilililfiil (11) 90002

29" Tendency ofpollutants to become concentrated in successive tropic levels is known as

A) Biopiracy B) Bioremediation

C) Biorythm D) Biomagnification

dsoOdrreddrlqj) ndd w{doc$d t$qdg deoQedrdiloRdd dddqc$$d adod:Edc$cntu{d!

A) sJcSroe.bd:r B) e^:oloeda:ao$edor

C) uo3neofrdf, D) a;Coedmr\d,odedor

30. Srnog is the combination of

A) Smoke andFog

C) Smoke and Snow

dJarlcjr: .add dooSoea;dcjDnC.

A) d;arl ab6 d:oas)

C) d.ori d>4 91.@c^IJ

-1n. Esluary means

'- fuch in nutrients

r- ri,-rter treatment

:,= c--. i- --^-i- -,JU.

, + ^::---a-.-4 J-)--)-qJ.{i r*1.i:: _ir rw: ^rc^!d%c")rltCJ. a- - 2 . :

B) d:orc $d> eat)

D) o&e d)d) bd)

B) Confluence ofriver and sea

D) End ofthe river

B) da a$& ntudd iorld>

D) dOc$ CIod6

B)

D)

Fog and snow

Gas and snow

3L ThePeriyarNational Park and wild life sanctuary is located at

A) TiamilNadu B) AndkaPradesh

C) Kamataka D) Kerala

docJrod *g*o3. ellerJjd d>3. r--;,') ei$o$odror$ ed.

A)

c)

(sct-A)

dtuSca:oed:

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B)

D)

uo5i5ided

EedS

lP.T.O.

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33. Which ofthe following is not inRajasthan?

A) BharatPurBirdSanctuary

B) SariskaWildlifeSanctuary

C) Ranthambore National Park and Wildlife Sanctuary

D) Govind Wildlife Sanctuary

& dsnddrl$g oJndcb o'orxoeddQgZ

A) ddss$d dflend:

B) io;n* ddrde& erePc3sodro,

34.RangantiffuBirdSanctuaryislocatedinthestateof

c)

D)

A) Maharashtra

Karnataka

dorio8url df,Aod:d dr o-oesrdeJc'

d:aecn$

doorn^ld

Which ofthese is a secondary pollutant

C) Oxygen

B) TamilNadu

D) AndraPradesh

B) da)qboad)

D) uoEigided

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PAN

CO,

mof9.o

^*2

A)

c)

(Set - A)

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B)

36.

A)

c)

(tu-A)

(13)

\\'l-rich ofthe following holds good in solid waste management?

-{) Reduce,Reuse,Recycle

B) Reconcile,R.eeove4Rescale

C) Recall,Recoliect,Refuse

D) Reduce,Recover,Refresh

* E$nd+d99 CD$* *:ioras, OdrddoJrg *grSa.ohd?A) dBab droG,d)dlu$E doG, d:cbz^.r$d droG.

B) d:d:no5ib8r, a$&ddol>O, *:6dooOxrc) ddatd.n$ ddarxrfue* &mdoio

D) dA$ d;oB, *bcbddo3lo, odEf droB

37.The chilikha lake is situated in the state of

A) Odisha

C) Karnataka

a39sl idoeddg di cn

A) z.Gsi

C) darorot;

B) amd

D) g^;3oooa3ef

{veo$ gigedrl*b

cjrure.r aro&riq;b

B) Bihar

D) Unaranchal

38, Species that are found only in a particurar region are known as

A) Endangered species B) Endemic species

D) Vulnerable speciesC) Extinct species

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u 9.1 do z^3 d gdrd ero8 rl S:

B)

D)

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39.Endangeredspeciesofplantsandanimalsarelistedin

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A) Green book

C) Blackbook

eesdozsde]d:d

A)

c)

dad: do4d

Plastic waste

e-waste

B)

D)

Red databook

Blue book

dodo dee;o c>{d

&eO ai:dd

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B)

D)

AarldJ, tuQ:JoJ$, d;o0$drl*o edd* etD6-oddd

A) qeE" 606% B) dd @,5%

c) .a-ao#,) D) liotod @6%

4|.Theprocessofrecyclingdecomposedorganicmaterialsintoarichsoil

dq d)1d

CDs, CPU, Monitors are examples of

A)

c)

A) 1e82

c) reez

B) Liquidrvaste

D) Silicon rvaste

A) ComPosting

C) Degradation

A) tugrtra%d

c) odds

42. Clean WaterAct was amended in the year

A) t982

c) 1992

d:{ Oeod aoo3loJ:d:o ddrdee gd}dc

B)

D)

Landfilling

Pyrolysis

eDjoqgo?'f

ar&oeOtuxs

AoSd Fodo$d drgrls$a $ed:od tb*dg d:d:*'#E dsd>d dgoS)

B)

D)

B)

D)

1962

t972

drodenoud:

1962B)

D)

(Set-A)

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40.

iilillffifliltililtfffiffilllt 9000243. CFC stands for

Chloro Fluoro Carbon

Chloro Fibre Compound

R)aqicA aodd

A) egedo fuedoe me^:raf

C) toedoe d,e^.:cf !oo3>d/ (. 'O -o

Acid Rain is caused due to oxides of

A)

c)

uflro"rlgocroR uQ d>S eruotsorbgd.

A) uQrdd drq drd,geeraf B)

D)

Eodegdd "$d: tre.:dJsJ

ro?rror 6$dl uQrddC) drdgeero"

15. The pH scale ranges from

A) 0-7

Ci 7 -r4

wwbi

A) 0-7

c) 7-r4

B)

D)

0-t4

5- 15

ilo^&cirOd..\^

B)

D)

0- 14

5- 15

16. The cyclones and floods is

A) B) Nr riskmanagement

c) D) National Disaster response force

oin

.{)

C)

(Set - A)

D) oo&eo$ add)' sr. -, dsEcb dd

t02

t_

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Food InsecuritY, ,Armed Conflicts are examples of --

A) Natural disasterB) Manmade disaster

D) InsurgencY

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&&:rd AdE

c) loSeeor

48. Earthquake is measured

A) PH scaleD) Darwin Scale

Inch Scale

af,odod

A) cba

C) eoa3d {eef

OJ.JL,,\J

(Set - A)

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49. Which state irrigates largest percentage of land

B)

D) dorl

B) o*d 4eefD) G"&rdr {eef

A)

c)

Kamataka

Harayana

B)

D)

Maharashtra

Punjab

o3rEd merP d*dduort^id

docSr-oeo

50. The Chipko Movementwas started in

A) HimalaYanregion

C) [ndogangetic Plain

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A) bdroe-:oiro' Sided

C) qodo€rrood[36r eJo$e)

dedaorycd> qllaD:rl &emdo lec>dd'

B) c:auc$D) Ccenaf

the-.--.-----=-'

B) Western Ghats

D) Eastern Ghats

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B) da*d> #qner

D) Codr dqrt*c

A)

c)

ir'

itri

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51. Demography is the study of

A) Plants and animals

C) Economicgrowth

rdio alo uo$d udrotdaand.

A) BBdrl$b a$d: a3e6rl$;

C) uQrE d$dsdri

C) Thermosphere

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A) abd.oe,qJc$O

C) ddoerxro$oqJ

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B) Population

D) Literacy Rate

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B)

D)

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B) aacd:ra3:ode.:

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52. Ozone day is observed on:

A) January 03

C) March 26 D) September 16

D) iiozud 16

53' Harmful U'V. Radiations emanating from the sun are prevented from reaching the Earth by

the presence of Ozone in the:

A) Mesosphere Stratosphere

Troposphere

,\,i]

lSet -A)

02

;.9(J

!"d+oein Add$d e:z3oieDrbdd.

A) aiddo 03

C) d:oz3r 26

(11)

B)

D)

B) November 10

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54. SilentValleY movement

A) Kamataka

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A) Earortld

c) oalF%d

A)

D) rbzgo"d

B) Global warming

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D) qdrlsg o3o$do 'ag

Kerala

{

tII

t

C) Ozone

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A) eJEziilr

t drroeo"

B) ie.:d d, u{ud

D) ernarf,

{P

56. Ozone depletion in the stratosphere will cause:

A) Forest fires

zJaicrd ror{o dqd #e'idrlst)

C) RajasthanGujarat

B) Eed9

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A) toBd s3o6

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B)

D)

(Set - A)

57. There are

A)4c)s

levels of biodiversity.

deddrefirdoJ: abrid$b

58. Extreme

gidloeod &edd:,

A)

A)

c)

Forest ecosystem

59. Savannah, Shivalik

A--1*

o3oaertero dqri .acbd .bdtucs'

A) dedo-og

C) er6d

by'rivers is called as

B) Hurricane

D) Cycleae

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A)

c)B)

D)

B)

D)

dadB)

aJoddrocbd

drd.gean

doid drd{a,!a COid d"ddoQ D) a.o# dord

Desert

ecosystem

B) r$cbsiJaaD doid cJ-cDnoQ

60. The type ofpyramid which is always upright

A) Biomass

C) Food

(Set -A)

D)

)02

A)

c)

Flood

Drought

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B) Energy

D) Number

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B) Secondary Consumers

D) DecomPosers

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R) OBeo$ nl66d)u I --:<-

D) Gdodoifr

What is mixed farming?

A) Growing croPs onlY

B) KeePing and grazing animals

Q Keeping livestock and growing crops onthe same land

D) Keeping livestock onlY

erg dr& aoddedr?

z3$r1€$i drog d€oJrrdd:

qdrl$d:o Fodrd& $E d:eoofoddr

zrodrao&rts&dxod:dcc)a^z"od:x;ctlde2c€rts$dd€o$dd).^Ng9

._:\-\<\^Jl

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expensive andbadto Environment?

A) Producers

C) Primary Consumer

qr6"d iddgo$&4 d:eocl$dd>

A) &dmrddd:

c) a36art ryEjd

A) Organicmatters B)

C) CostlY andharmfulPesticides D)

oiDd Ar?rd cbzYoo drE doddd Ea*d:?

A) sodo$d edo$rl$b B)

c) d>zroo ${ aoe@dd Eeosiladdrl$ D)

(Set - A)

Chemical fertilizers

N arural F ertilizers

o";ioo$&d fr'eaiod*;

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61. Grazing food chain always starts with

(21)

61. Extraction of mineral and metal form the earth is:

A) Agriculture

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B) Mining

B) Environmentalresistance

D) Population size

do{ noa3ps: drg,l$Sn ddoJ:enrbdd.

B) doid gisdoef

D) rdioa3ro$ rn$

C) Transportation

Carryin_e

zSouOiud>md-rA ?-? F, ^r-?c^J iJ ^J U LJ \, (.J

dra; rcpd,mR[= nd:frrr

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equity is the necessary condition for achieving.

Sustainable

B) r})Ad erQdo?

D) dond erQdo%

B) Environmentallmpactassessment

domod:d d&e-:.dodd

(Set - A)

#OI; =:s CPe-:rd:odd O oiradrclo "ae:a5 -)

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E_

67. EIAstands For

A) Enviromnent IllegalAssessment

C) Ecological Iile-ealAssessment

- ^--:'dc^Jc^J 9i-*v.

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A) dr& B) riedriaod

c) roori D) l})ad erQd.r%

(

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68.

od.

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69.

A) Airpollution

C) Noise pollution

ooxDc$&d w{d:d .add* rodrodg.

A) amc$odrae)d,

C) dal d:aOd,

B)

D)

Nuclearpollution

(Set - A)