class -2 EVS.pdf read this carefully 123567

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1. * Water Resoures.(Reneuoalde eiOUTCC)
tuvon belgs arnialtond fort are deperdeton oatr
alterre or cater, uakr is aunvercal solver."
+ watr is vsed er iigaton, navigatn od' geoeratig eleckict.
’ later is vgcd ext voly fn indlstieg
Thee is no
’ 34 g the earthd sUYyace is oCCupted by caater at S/. tn oceon)
" Qver-uti lzaion q ater veourte
or
(:47/rozen torm, qrourd usotr-os. latoe ond tvex-D0 22.)
their susval.
dotos Deyortaten ead to drought oo scortyraiall.
Recuo-Poploton enploacon, agrtcutue, dey Jnd brought under trpatn, haro ekedie poer
-steton (to gonerat. eleckicthy), tnduthrialoafon, utton~aton
"Floods
"The outlou atr, ahich gatke to aconOdate otfhn te banks o techonel esulty in
spreadia a KCH oater over adgot tg aveas ts called Floo
Chinak tong tto tiuer took atoll 6nltlon people Sart certury
’Eyrcts -Soil erosion, Jos g sol g Aldy. chongr pogifion oy rre soomes, sedrentston.
Ramedies Ryoretation, cogjructon a davs, plordig o tee along bontu rrer,
edt.
categoris -Rabygll gfood., stoandBf glood, dun gaihoa yoode

2. Doughte
"Dought is a lorg, cortUoUs pertodq dry weater"a goen by Susas Mauheg)
>Natral avakbit, qwtr is belo) averoge, dy dearther aod contnou shotags e
vanwakr charcctisey drauytl.
s (afeaertd : Metorologia droughd, yholeltol deoygd, aricultural drougdo.
*Appror-atly
Thee ts conlct avong varous natong about shast rwer cootr & cqutvchon dony.
Arog idle eot ontird conrt omag Torco, Syra, Drat 4Tustey
"Dam (nainy sorirngation)
"stuctus bt aOA the sktaM ,rver or estuag to vefen oosty ucale Dom
Aso helpin qeaerasing hydroelecar pouer , socio-economic pouer
Joahoal Nehsw caled 3or autnpley q modern Drda", chha hau hoGt no. danth sTC.
Note Some mort
adves eygect on abal corundes, iroaon în salinitld
Kothna-qodoui corct Knratota, Arda Rodoh ad Mabayasttkd
Kovert coryt Kasnatata nd mi lhodlu
Rawt-Biad Hayora ond Puniab
" Ntle rver orlctEthiopta ard Etpt
Eaesqy'enerqg is cagaaiky tod ok", ing beàg, need energg tosorvveardqroud.
ana pouer, houe ver santic tmveto aloRd monto te
ad euplott all eaergy tAOUYTL Lo Ophrrt (eve

3. 2000-’ u0rd populaton seached Sqbtlion, ohich veed b lon toe
Mgatve imglcatoruon envhonorf -velene y cq,co, sulphoni Jeod ct
gol guely at deplet vey jaf, Nador katakan illen yeak fo (raato oal otl, riteral et
Thee stl be scarch tostl ueli gor upcona geAerafons.
Caegoris-) Non-ehauttdle sun, ind, coatr, hdey ete
(Note> Bto-ga & bioyuls come wnder non-ehatitle aadur)
2 Non-yeORuDobles Coal, petoleuM,
Use abternatre souKe energy Cabae cOmvensonal) con ochive susfavobe deucoer.
oL-scor, otd, tdageoerrnal, bicgs enegtu.
But thycoe hihl n-xeliale
k Mined ResoueL
MtAeral Ha strucurally horgeneouj syastone degnte chemcal conpstifton
+ Naturaly ocurtng subsonce gound in eartke csUst
Kcde mekdy
Thok ae oehaucible and on-rereakble ouxtes (: Minealoaton is Jergt, paces)
Used in coNUMer goode, deene, equtpunts, osnantk ct
Aumini ’ Aircsat, elechic cable, vott
ga,dicsel
Copper
Golo, stlver platnum orOMerts, alos, dentty
Uronjum ’ Nudear bobs elecicy
-Maing The act etacng orU yOM easth crut
.Colervathos mintal
Pallrte 4t, ubatr, soil ee, dust aeedaton exoeda thcsfel lanit value.
a sold coak gorerat dut, mig pollutey tie envaonm
Minig operachou cave Sound pollton

4. Water Resources
18. Purposes of construction of dams or reservoirs are...
(A) Power generation (B) Flood control
19. We,get our supply and reserves of freshwater ....from
hydrological cycle(B) from carbon cycle (C) from snowfall
20. Major main purpose of most of the dams around the world is ..
(A) Power generation, [B Irrigation (C) Drinking water supply (D) Flood control
21. Which of the following could be the most significant socio-economic impact of dams?
(A) Loss of biodiversity (Bj Poorly managed involuntary displacement & loss of livelihood
(C) Loss of forests and wildlife habitat (D) Water logging
UDrilling large number of deep bore wells
22. Which of the following is not an ideal solution for tackling the water crisis?
(B) Population control
(C) Water conservation in irrigation
(A) Drought could cause life and property loss
(C) Drought could recur in the same place
drought is a slow process
23. What is the major characteristic of drought that differentiates it from other natural
calamities?
(Cririgation
(A) Avoid and minimize impact on ecosystem
24. Which of the following measures is nota solution for improving the acceptability of dam
projects?
(D) Control Water pollution
(B) Ensure that displaced and project-affected peoples' livelihoods are Improved.
(C) Conduct regular monitoring and periodic review.
(A) Manganese
Construct a single large dam instead of a number of small dams.
Mining and its impact
(D) All these
(B) Drought has both naturcl cnd social implications
e Without a well-defined start or end,
25. India has the world's largest share of which of the following?
JB Mica
(A) Water scarcity (B) Water pollution
o0 (C) Copper (D) Diamond
Food Resources-World Food Problems, Effects of Modern Technology, Fertilisers & Pesticides)
26. Which of the following is an adverse effect of modem aariculture?
(C) Water logging
,(D All these

5. 2/.Out of the following nutrients in fertilizer, which one causes minimum water pollution?
(A) Nitrogen (C) Potassium
28. Select the least harmful class of compounds form the following
(A)Chlorinated hydrocarbons(B) Organophosphates(C) Carbonates
29. Select the most environmentally friendly method of insect control from the following
(B) Application of Chlorinated hydrocarbons
(D) Crop rotation and intercropping .
(A) Application of organophosphates
(C) Application of parathyroid
(B) Phosphorus
(D) Use of chemical fertilizers and alternate methods for insect control
Energy Resources -Energy Problems
30. Which of the following is the most environmentally friendly agriculture?
(A) Use of chemical fertilizers and insecticides (B) Use of insecticides and organic fertilizers
(C) Use of organic fertilizers and alternate methods for insect control.
31. ldentify the nonrenewable source of energy from the following
(B) Fuel cells A Coal
(A) Highly polluting (B) High waste disposal cost
Unreliable supply (D) None of these
32. Mention the important disadvantage that is associated with most of the most of the
renewable energy sources?
33. What is the function of a fuel reformer in a fuel cell?
(AJ Enabling the fuel cell to use a hydrocarbon instead of hydrogen
(B) Control of emissions from fuel cell (C) Cooling of fuel cell
(D) Enabling the fuel cell to use water as a fuel
34. Which of the following are non-renewable resources:
(jFossil fuels (A) Forests
(C) Animals
34(X) Which of the following are renewabie resources:
(A) Plants (B) Animals
(A) Highly Poluting
(C) Wind power
(C) Air
35. We should use less fossil fuels becaUse these are....
(B) Exhaustible resources (C) Difficult to produce
36. Both power and manore is provided by
(A) Atomic plants (B) Hydro-electric stations(9YBiogas plants
37. Maximum per capita consumption of energy in the world is in :
(A) Third World Countries
G Industrialized western countries
(A) Electricity
38. Common energy source in Indian vilages is..e..
(B) Coal
39. Fossil fuels and metallic minerals are
(A) Renewable resources
.Non-renewable resources
(A) Coal
(D) None of these
(B) Developing Countries
(D) None of these
(D) Parathyroid
40. Which of the following i_ a renewable resource?
E Forests
(D) Wave power
(C) Petrol
(D) All these
(D) All the above
(D) For all these reasons
(C) Sun (Pwood & animal dung
(D) All the above
(B) Inexhaustible Resources
(D) None of these
(D) Diesel

6. Other Questions
53. The removal of carbon dioxide from the atmosphere and storing in the terresirial biosphere
is called ...
(B) Carbon fixing (C Carbon sequestration(D) Photodecomposition
54. The interface between a terrestrial ecosystems and aquatic system is termed as ...
(A) Carbon dating
(A) estuary
(A) transition zone
55. Movement of sea water towards inland is called
Columnl
i. Solar energy
ii. Minerals
iii.biogas
JA 1-c, i-a, ii-b
(B) wetland
S6. Match the terms of column I with the appropriate terms of column ll.
(A)afforestation
Desertification
(B) estuary
WAubreville
Column !
a. Exhaustible
b. renewable
S8) The soil conservation practices include....
c. Inexhaustible
(B) 1-a, li-c, ii-b
(C) aquifer
(B) Robert Abraham
(C) ecotone
(B)Controlling overgrazing (9 rotation of rops
60. The word desertification was used for the first time in 1949 by.*
61. Cases of desertification are
(A)
Deforestation (B) Overgrazing
(C) 1-b, li-c, ll-a
(D) None of these
(C) Sohel
D) salt water intrusion
(DAIl these
(D) None of these
(C) Intensive agriculture (D) All these

7. 62. EFfects of
desertification are...
(A) Loss of
biodiversity
(C) Decline in world's food production
O3. Desert Development Programme was implemented in
(AT977-78 (B) 1987-88
ENVIRONM
(A) Afforestation
64. The techniques of dealing with desertification are...
(B) Change
(DY All these
million sq mi).
(A) True
(C)1997-98
(B) False
in
climate
and
weather condition
(B)
Construction of water
harvesting structuree
(C)Giving aternative source of income to people(Dy All these
(D)None of these
O3. The world ocean covers Z1 nercent of the ehle surfcce, or about 361 milion sq Km (140