Rajasthan Board 12th Environmental Science Sample Paper 2021

mPp ek/;fed ijh{kk ekWMy iz'u&i= 2021
SENIOR SECONDARY EXAMINATION,
MODEL QUESTION PAPER-2021
i;kZoj.k foKku
ENVIRONMENTAL SCIENCE

le;% 3¼ ?k.Vs iw.kkZd 56
ijh{kkfFkZ;ksa ds fy, lkekU; funZs'k %&
GENERAL INSTRUCTION TO THE EXAMINEES:

1- ijh{kkFkhZ loZizFke vius iz'u i= ij ukekad vfuok;Zr% fy[ksaA
Candidate must write first his/her Roll No. on the question paper compulsorily.
2- lHkh iz'u djus vfuok;Z gSA
All the questions are compulsory.
3- izR;sd iz'u dk mÙkj nh xbZ mÙkj iqfLrdk esa gh fy[ksaA
Write the answer to each question in the given answer book only.
4- ftu iz'uksa esa vkUrfjd [k.M gS mu lHkh ds mÙkj ,d lkFk gh fy[ksaA
For questions having more than one part the answers to those parts are to be
written together in continuity.
5- iz'u i= ds fgUnh ij vaxzsth :ikUrj.k esa fdlh izdkj dh =qfV@vUrj@fojks/kkHkkl gksus ij fgUnh
Hkk"kk ds iz'u dks lgh ekusAa
If there is any error/difference/contradiction in Hindi & English version of the
question paper, the question of the Hindi version should be treated valid.
6- iz'u dk mÙkj fy[kus ls iwoZ iz'u dk Øekad vo'; fy[ksaA
Write down the serial number of the question before attempting it.
7- iz'uksa dk vadHkkj fuEukuqlkj gSA
Weightage of marks for the question is as follows.

[k.M iz'u la[;k iz'uksa dh vad izR;sd dqy vad Hkkj
la[;k iz'u
[k.M&v(A) 1 ( i to x ), 2 to 11 20 1 20
[k.M&c(B) 12 to 15 4 2 8
[k.M&l(C) 16 to 19 4 3 12
[k.M&n(D) 20 to 21 2 4 8
[k.M&;(E) 22 to 23 2 4 8

iz'u&i=
fo"k;&i;kZoj.k foKku
d{kk&12
[k.M&,
SECTION-A
1- fn;s x;s cgqoSdfYid iz'uksa ds mŸkj dk lgh fodYi p;u dj mŸkj&iqfLrdk esa fyf[k;s &
Write the answer of following multiple choice questions in the given answer book. 1 X 10 = 10
¼i½ ok;qe.My dk lcls uhps dk Lrj dkSulk gS &
¼a½ vk;uksLQh;j ¼b½ ehtksLQh;j
¼c½ LVªsVksLQh;j ¼d½ VªksiksLQh;j
Which is the lowest level of Atmosphere -
(a) Ionosphere (b) Mesosphere
(c) Stratosphere (d) Troposphere

¼ii½ ,Dlfdj.kksa ds fofdj.k dh bdkbZ gS &
¼a½ Msflcy ¼b½ jkWUtu
¼c½ D;wjh ¼d½ jSM
Unit of X rays radiation is -
(A) Decible (B) Roentgen
(C) Curie (D) Rad

¼iii½ fuEu esa ls vuohdj.kh; izkd`frd lalk/ku gS &
¼a½ [kfut inkFkZ ¼b½ gok
¼c½ ou ¼d½ ty
Which of the following is a Non-renewable Natural resourse.
(a) Minerals (b) Wind
(c) Forest (d)Water

¼iv½ oU; tho ¼laj{k.k½ vf/kfu;e dc ykxw fd;k x;k &
¼a½ 1972 ¼b½ 1974
¼c½ 1980 ¼d½ 2000
The wild life (Protection) Act was Implemented on
¼a½ 1972 ¼b½ 1974
¼c½ 1980 ¼d½ 2000

¼V½ i;kZoj.k ¼laj{k.k½ vf/kfu;e dks fdruh /kkjkvksa esa foHkkftr fd;k x;k gSA
¼a½ 24 ¼b½ 25
¼c½ 26 ¼d½ 27
The Environment (Protection)Act is divided into how many Sections.
¼a½ 24 ¼b½ 25
¼c½ 26 ¼d½ 27

¼vi½ ty mipkj.k dh jksxk.kquk'ku fof/k eas ftl xSl dk mi;ksx fd;k tkrk gS og gS &
¼a½ vkWDlhtu ¼b½ gkbMªkstu
¼c½ ukbVªkstu ¼d½ Dyksjhu
Gas which is used in Disinfection method of water treatment
(a) oxygen (b) Hydrogen
(c) Nitrogen (d) Chlorine

¼vii½ fpidks vkUnksyu dh 'kq:vkr fdl ftys ls gqbZ \
¼a½ gfj}kj ¼b½ nsgjknwu
¼c½ peksyh ¼d½ uSuhrky
In which district Chipko Movement was Started
(a) Haridwar (b) Deharadun
(c) Chamoli (d) Nanital

¼viii½ ekuotfur vkink dk mnkgj.k ugha gS
¼a½ iznw"k.k ¼b½ HkwdEi
¼c½ ukfHkdh; foLQksV ¼d½ vkxtuh
Not an example of man made disaster
(a) Pullution (b) Earth Quake
(c) Nuclear Explosion (d) Arson
¼ix½ dkSulk tSo lalk/ku dk mnkgj.k gS \
¼a½ e`nk ¼b½ ikS/ks
¼c½ pÎku ¼d½ [kfut
Which is the example of biotic resource
(a) Soil (b) Plants
(c) Rock (d) Minerals

¼x½ vkS|ksfxd xfrfof/k;ksa ls mRiUu dpjk fuEu esa ls fdles lfEefyr fd;k tkrk gS &
¼a½ vkoklh; ¼b½ laLFkkxr
¼c½ uxjikfydh; ¼d½ vkS|ksfxdh;
Wasre by Industrial activities included in
(a) Residential (b) Institutional
(c) Municipal (d) Industrial

iz'u la[;k 2 ls 8 rd iz'uksa ds mŸkj ,d iafDr esa nhft, %&
Write the answer of following questions in one line. 1X7=7

Q. 2 fdUgh nks gfjr x`g xSlksa ds mnkgj.k nhft, \ %&
Give any two examples of green house gases.

Q. 3 iznwf"kr ty ls gksus okys nks jksxksa ds uke fyf[k, &
Write two disease which are caused due to polluted water.

Q. 4 gfjr vFkZO;oLFkk dks ifjHkkf"kr fdth, &
Define Green Economy.

Q. 5 NAPCC dk iqjk uke fyf[k,&
Write full Form of NAPCC.

Q. 6 lafo/kku esa vuqPNsn 48-A fdlls lacaf/kr gS \
Article 48-A of constitution is related with.

Q. 7 lafo/kku ds vuqPNsn 51-A ds rgr~ Hkkjr ds ukxfjd dk ,d ewy dÙkZO; le>kb,
Explain Fundamental duty of citizen of India under Article 51-A of constitution

Q. 8 o"kkZ ty laj{k.k dh ,d fof/k dk uke fyf[k,
Write one method of Rain water conservation

iz'u la[;k 9 ls 11 esa fjDr LFkku dh iwfrZ djrs gq, mŸkj&iqfLrdk esa fyf[k,A
Fill in the Blanks of questions No. 9 to 11 in the given answer book.
1x3=3

Q. 9 lkSje.My esa dsoy ------------------------------ ,dek= ,slk xzg gS ftl ij thou laHko gSA
................... is the only planet in solar system where life is possible.

Q. 10 oehZ daiksfLVx ,d izkd`frd dkcZfud moZjd gS tks --------------------- cukrs gSA
Vermi composting is a natural organic fertilizer which is made by ................... .

Q. 11 'kq) ty dk PH eku ---------------- ls ------------- ds chp gksrk gSA
PH value of the water is between -------- to ------------.

[k.M & ch
SECTION - B

Q. 12- ÅtkZ laj{k.k gsrq viuk;s tkus okys nks mik; fyf[k, & 2
Write two measures which is adopt for energy conservation

Q. 13 - ou ¼laj{k.k½ vf/kfu;e dh nks fo'ks"krk,W le>kb,A 2
Explain two specialty of forest (conservation) Act
Q. 14- tSo fuEuhdj.kh; o vtSo fuEuhdj.kh; dpjsa ds nks&nks mnkgj.k nhft,A 2
Give two examples each biodegradable and Non biodegradable wastes.

Q. 15- ck<+ fu;a=.k ds nks mik; fyf[k, A 2

Write two measures which is used for flood control

[k.M & lh
SECTION - C
Q. 16 rkih; iznw"k.k dks ifjHkkf"kr dhft, blds nks izHkko le>kb,A 1$2¾3
vFkok
/ofu iznw"k.k dks ifjHkkf"kr le>kbZ;s blds nks izHkko le>kb,A
Define thermal pollution explain its two effects.
OR
Define noise pollution explain its two effects.
Q. 17 izkd`frd lalk/kuks dh Jsf.k;ksa dks mnkgj.k nsdj le>kb, 3
vFkok
rhu R's ladYiuk dks le>kb,A
Explain category of natural resources with example
OR
Explain concept of three R's
Q. 18 Hkkjr esa ijEijkxr :i ls vif'k"V ty mipkj.k dh fdUgh rhu izfØ;kvks dks
le>kb, 3
vFkok
oehZdYpj dks le>kb,
Explain three conventional waste water treatment processes in India
OR
Explain Vermiculture
Q. 19 vkS/kksfxdhdj.k ls mRiUu rhu i;kZoj.kh; leL;kvksa dks le>kb, 3
vFkok
uxjhdj.k ls i;kZoj.k ij iM+us okys rhu izHkko le>kb,A
Explain three problems originating from Industrialisation
OR
Explain three Effect of urbanisation on environment.

[k.M & Mh
SECTION - D

Q. 20- vif'k"V ty mipkj dh ok;oh; o vok;oh; fof/k dks fp= lfgr le>kb,A 2$2¾4
vFkok
Bksl dpjk izcU/ku dh izfØ;k dks js[kkfp= cukdj le>kb,A
Explain Aerobic and Anaerobic method of waste water treatment process with digram.
OR
Explain process of solid waste managment with line digram.

Q. 21- mi;ksx dh fujUrjrk ds vk/kkj ij izkd`frd lalk/kukas dk o.kZu dfj,A lalk/kuksa ds
oxhZdj.k dk pkVZ cukb,A 2$2¾4
vFkok
vkinkvksa ds oxhZdj.k dk o.kZu dfj, ,oa oxhZdj.k dk pkVZ cukb,A
Discribe natural resources on the basis of Continuous usage- draw a chart of
classifiction of resources.
OR
Describe the classifiction of disasters and draw a chart of classifiction.

[k.M & bZ
SECTION - E
Q. 22- iznw"kd dks ifjHkkf"kr dhft,A iznw"kdksa ds izdkjksa dks mnkgj.k nsdj le>kb,A
1$3¾4
vFkok
ty iznw"k.k dks ifjHkkf"kr dhft,A ty iznw"k.k ds fdUgh rhu L=ksrksa dk o.kZu dhft,A
vFkok
ok;q iznw"kd dks ifjHkkf"kr dhft,A ok;q iznw"kdksa ds rhu L=ksrksa dk o.kZu dhft,A
Define pollutants. Explain types of pollutants by example
OR
Define water pollution. Describe any three sources of water pollution.
OR
Define Air pollutants Describe any three sources of air pollutants.

Q. 23- ty iznw"k.k ¼fuokj.k rFkk fu;a=.k½ vf/kfu;e dh pkj fo'ks"krkvksa dk o.kZu dhft,A
1$1$1$1¾4
vFkok
ok;q iznw"k.k ¼fuokj.k rFkk fu;a=.k½ vf/kfu;e dh pkj fo'ks"krkvksa dk o.kZu dhft,
vFkok
ou laj{k.k vf/kfu;e dh pkj pkj fo'ks"krkvksa dk o.kZu dhft,
Describe four speciality of water pollution ( prevention and control) Act
OR
Describe four speciality of Air pollution ( prevention and control) Act
OR
Describe four speciality of Forest conservation Act.