Rajasthan Board 12th Model Paper 2024 Agriculture Chemistry

mPp ek/;fed ijh{kk] 2024
Senior Secondary Examination, 2024
uewuk iz'u&i=
Model Paper
fo"k; & d`f"k jlk;u foKku
Sub : Agriculture chemistry
le; % 03 ?k.Vs 15 feuV iw.kkZad % 56

General Instructions to the Examinees
1- ijh{kkFkhZ loZizFke vius iz'u&i= viuk 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 gSaA
All the question 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 gSa] 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 o vaxzsth :ikarj.k esa fdlh izdkj dh =qfV@varj@ fojks/kkHkkl gksus ij
fgUnh Hkk"kk ds iz'u dks gh lgh ekusaA
If there is any kind of error/difference/contradiction in the hindi and
english versions of the question paper, the question of 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.

[k.M & v
Section - A

oLrqfu"B iz'u %&
Multiple Choice Questions:-
1) fuEufyf[kr iz'uks ds mÙkj dk lgh fodYi p;u dj mÙkj iqfLrdk esa fyf[k,A
In the follwing questions, select the correct answer and write it in the answer book.
i) e`nk ds vo;o gSA ¼½½
v½ [kfut inkFkZ c½ dkcZfud inkFkZ
l½ e`nk ty o ok;q n½ mi;qDr lHkh
The components of soil are .
A) Minerals B) Organic matter
C) Soil water and air D) All of them
ii) dk;kUrfjr pV~Vku dk mnkgj.k gSA ¼½½
v½ LysVh iRFkj c½ ihV
l½ laxejej n½ vHkzd
It is an example of metamorpnic rock.
A) Gray Stone B) Peat
C) Marble D) Mica
iii) e`nk fuekZ.k esa lfØ; dkjd gSaA ¼½½
v½ tyok;q c½ iSr`d inkFkZ
l½ LFkykd`fr n½ le;
Active factor in soil formation .
A) Climate B) Parent material
C) Topography D) Time
iv) dkcZfud o vdkcZfud vo;oks dk fupys laLrjks esa igq¡p dj tek gksus dks dgrs gSa\ ¼½½
v½ fu{ksi.k c½ fu{kkyu
l½ áwfefQds'ku n½ ysVjkbts'ku
The accumulation of organic and inorganic components in the lower level of soil
is called.
A) Illuviation B) Eluviation
C) Humification D) Laterisation

v) dkcZfud dksykWbM dh /kuk;u fofue; {kerk gksrh gSA ¼½½
v½ 3&10 lsUVheksy@fdxzk c½ 10&30 lsUVheksy@fdxzk
l½ 70&80 lsUVheksy@fdxzk n½ 150&300 lsUVheksy@fdxzk
The cation exchange capacity of organic colloid is .
A) 3-10 Centimole/kg B) 10-30 Centimole/kg
C) 70-80 Centimole/kg D) 150-300 Centimole/kg
vi) e`nk dkcZfud dkWyksbM gSA ¼½½
v½ dsvksfyukbV c½ lsiksukbV
l½ áwel n½ dksbZ ugha
Soil organic colloid is -
A) Kaolinite B) Saponite
C) Humus D) None of these
vii) vk;u fofue; ,d izØe gSA ¼½½
v½ mRØe.kh; izfd;k c½ vuqRØe.kh; izfd;k
l½ nksuks n½ buesa ls dksbZ ugha
Ion exchange process is
A) Reversible Process B) Irreversible Process
C) Both D) None of the above
viii) PH o POH dk ;ksx lnSo gksrk gS & ¼½½
v½ 1 ls 14 c½ 0 ls 14
l½ 1 ls 7 n½ 7 ls 14
Sum of PH and POH is always.
A) 1 to 14 B) 0 to 14
C) 1 to 7 D) 7 to 14
ix) cq>s gq, pwus dk jklk;fud lw= gSA ¼½½
v½ CaCO3 c½ CaO
l½ Ca(OH)2 n½ dksbZ ugha
The chemical formula of slaked lime is
A) CaCO3 B) CaO
C) Ca(OH)2 D) None of these

x) jktLFkku esa yo.k izHkkfor e`nkvks dk {kS=Qy gSA ¼½½
v½ 3-74 yk[k gSDVj c½ 15 yk[k gSDVj
l½ 0 ls 5 yk[k gSDVj n½ mi;qä esa ls dksbZ ugha
The area of salt affected soil in Rajasthan.
A) 3.74 Lakh Hector B) 15 Lakh Hector
C) 0 to 5 Lakh Hector D) None of these
xi) fuEu esa ls izkFkfed iks"kd rRo ugha gSA ¼½½
v½ u=tu c½ QkWLQksjl
l½ dSfY'k;e n½ iksVsf'k;e
Which of the following is not a primary nutrient.
A) Nitrogen B) Phosphorus
C) Calcium D) Potassium
xii) D.A.P. dk jklk;fud lw= gSaA ¼½½
v½ Ca(HPO4).H2O c½ NH2CONH2
l½ (NH4)2HPO4 n½ Ca3(PO4)2
The chemical formula of DAP is-
A) Ca(HPO4).H2O B) NH2CONH2
C) (NH4)2HPO4 D) Ca3(PO4)2
xiii) QkWLQksjl ;qDr moZjdks ls Qlys QkWjQksjl dk mi;ksx dj ikrh gSA ¼½½
v½ 5&10 izfr'kr c½ 5&20 izfr'kr
l½ 5&30 izfr'kr n½ 5&40 izfr'kr
Crops utilise phosphorus from phosphorus containing fertilizers-
A) 5 to 10 Percent B) 5 to 20 Percent
C) 5 to 30 Percent D) 5 to 40 Percent
xiv) ykj esa ik;k tkus okyk ,Utkbe gSA ¼½½
v½ isfIlu c½ fVªfIlu
l½ ykbisl n½ Vk;fyu
Enzyme found in saliva is-
A) Pepsine B) Trypsine
C) Lipase D) Tylin Enzyme

xv) uhy gfjr 'kSoky o ,tksyk dk mi;ksx fdl Qly esa djrs gS ¼½½
v½ xSgw¡ c½ tkS
l½ eDdk n½ /kku
Blue green algae azolla is used in which crop-
A) Wheat B) Barley
C) Maize D) Cereals
xvi) de rki vf/kd le; fof/k esa nw/k dks rki o le; rd /kkj.k djrs gSA ¼½½
v½ 720C rki 15 lSd.M c½ 630C rki 30 feuV
l½ 720F rki 30 feuV n½ 650C rki 15 lSd.M
In the long temprature and 10mg time method milk is retained for a longer period
of time.
A) 720 C Temp 15 Second B) 630 C Temprature 30 Minute
C) 720 F Temp 30 Minute D) 650 C Temprature 15 Second+
2) fjDr LFkkuksa dh iwfrZ dhft,%
Fill in the blanks:
i) vkXus; o volknh pêkuks ds ewy :i esa jklk;fud o HkkSfrd ifjorZu ds mijkUr cuh
pV~Vkuks dks ------------------------ dgrs gSA ¼½½
The rocks formed ofter chemical and physical changes in the original form of Igneous and
sedimentary rocks are called ..........................
ii) e`frdk ij ----------------------- vkos'k gksrk gSA ¼½½
There is .......................... Chrge on the clay .
iii) yo.kh; rFkk {kkjh; e`nk¡,s -------------------------- esa ikbZ tkrh gSA ¼½½
Salty and alkaline soils are found in ................ .
iv) {kkjh; ty dh EC -------------------- gksrh gSA ¼½½
The Electrical conductivity of alkaline water is ................. .
v) u=tu dh deh ls ikS/ks ------------------ fn[kkbZ nsrs gSA ¼½½
Plants appear to .................. from lack of nitrogum .
vi) vf/kdka'k iks"kd rRo e`nk PH -------------------- ij miyC/k gksrs gSA ¼½½
Most of the nutrients are available in soil at the PH ................
vii) ,ekbM ;qä dkcZfud moZjd ----------------- gSA ¼½½
Amide containing organic Fertilizer is ............... .

viii) foVkfeu A dh deh ls ----------------- jksx gksrk gSA ¼½½
Vitamin A deficiency causes the disease ............... .
ix) tho/kkfj;ks ds cky] Ropk] uk[kwu dqN gkeksZUl vkfn ----------------- ds cus gksrs gSA ¼½½
Hair,skin, nails and harmones of living beings are made up of ............... .
x) isIVkbM esa ,ehuks vEy ----------------- }kjk tqMs gksrs gSA ¼½½
Amino acids in peptides are linked by ............... .
3½ fuEufyf[kr iz'uksa ds mÙkj ,d 'kCn vFkok ,d iafDr esa fyf[k,A
Write the answer of the following question in one word or one line .
i) flfydsV Dys fdrus izdkj dh gksrh gSa \ ¼1½
How many types of silicate clay are there ?
ii) /kuk;u fofu;e {kerk dh bdkbZ D;k gksrh gS \ ¼1½
What is the unit of cation exchange capacity ?
iii) PH 'kCn dh [kkst fdl oSKkfud us dh Fkh \ ¼1½
Which scientist discovered the word PH ?
iv) R.S.C. dk lw= fyf[k,A ¼1½
Write the formula of R.S.C.
v) e`nk esa lw{e thoks dh fØ;k'khyrk fdl ih- ,p- eku ij lokZf/kd gksrh gS \ ¼1½
The activity of microorganisms in soil is highest at which pH value ?
vi) QkWLQksjl ;qä moZjdks esa ik;s tkus okys ,sfM;ks,fDVo inkFkksZ ds uke fyf[k,A ¼1½
Name the radioactive substance found in phosphorus containing fertilizer.
vii) DNA o RNA esa vUrj crkvksA ¼1½
Differentiate between DNA and RNA.
viii) ukbVªkstu/kkjh tSo moZjdks ds mnkgj.k fyf[k,A ¼1½
Give the Examples of nitrogen containing bio fertilizer.
[k.M & c
Section - B

y?kqÙkjkRed iz'u % ¼mÙkj 'kCn lhek yxHkx 50 'kCn½
Short answer type questions: (Answer word limit approx: 50 words)
4½ e`nk ifjPNsfndk fdls dgrs gS \ ¼1½½
What is soil profile ?
5½ dkcZu&u=tu vuqikr dk e`nk esa egÙo crkvksA ¼1½½
Explain importance of carbon- nitrogen ratio in the soil .

6½ ukbVªkstu fLFkjhdj.k fdls dgrs gS\lgthoh ukbVªkstu fLFkjhdj.k djus okys thok.kq
fdl iztkfr ls lEcfU/kr gS\ ¼1½½
What is nitrogen fixation? Which species does the symbiotic nitrogen fixing bacteria
belong to ?
7½ e`nk dksykWbM ds pkj xq.k crkb;sA ¼1½½
Mention four properties of soil colloid ?
8½ mHk; izfrjks/ku foy;u D;k gS\ blds xq.k fyf[k,A ¼1½½
What is mutual resistance solution ? Write its properties .
9½ e`nk ds csl lar`Ii ds ckjs esa crkb;sA ¼1½½
Explain about base saturation of soil .
10½ fo|qr pkydrk D;k gSa\ bldh bdkbZ fyf[k,A ¼1½½
What is electrical conductivity ? Write its unit .
11½ yo.kh; o {kkjh; e`nkvks esa Hksn dhft,A ¼1½½
Differentiate between salty and alkaline soil .
12½ ikni iks"kd rRoks ds vo'kks"k.k dh fØ;kfof/k ds pkj pj.k fyf[k,A ¼1½½
Write four steps in the process of absorption of plant nutrients .
13½ uk'kdh; d`f"k jlk;uks ds izfrdwy izHkko ls cpus ds mik; fyf[k,A ¼1½½
Write measures to avoid adverse effects of harmful agriculture chemicals .
14½ oehZ dEiksLV ds ykHk fyf[k,A ¼1½½
Write the benefits of vermi composte.
15½ nw/k esa vEyrk fdrus izdkj dh gksrh gS \ ¼1½½
How many types of acidity are there in milk ?
[k.M & l
Section - C

nh?kZ mÙkjh; iz'u % ¼mÙkj 'kCn lhek yxHkx 100 'kCn½
Long answer type questions: (Answer word limit approx: 100 words)
16½ E;wjsV vkWQ iksVk'k dk jklk;fud lw= fy[kks o Qlyks ij pkj izHkko
fyf[k,A ¼1$2¾3½
Write the chemical formula of murate of potash and its four effects on crops .
vFkok/OR
fdlku [kkn D;k gS \ bldh e`nk esa vfHkfØ;k o Qlyksa ij izHkko le>kvksA
What is CAN manure ? Explain Its reaction in soil and effect on crops .

17½ jklk;fud moZjdks ls Hkkjh rRo lap;u ds izHkko dks le>kvksA ¼3½
Explain the impact of heavy element accumulation from chemical fertilizers .
vFkok/OR
ok;q iznw"k.k fu;=a.k dh eq[; fof/k;ks dk o.kZu djksA
Describe the main methods of air pollution control .
18½ tSo moZjdks ds ykHk rFkk iz;ksx esa j[kh tkus okyh lko/kkfu;k¡ fy[kksA ¼3½
Write the benefits of bio fertilizers and precautions to be taken in their use .
vFkok/OR
ukbVªkstu fLFkjhdj.k djus okys nks tSo moZjdksa dk o.kZu dhft,A
Describe two bio fertilizers that fix nitrogen.
[k.M & n
Section - D
fucU/kkRed iz'u %& ¼'kCn lhek yxHkx 250 'kCn½
Essay type questions: (word limit approximately 250 words)
19½ dkcksZgkbMsªV dk oxhZdj.k dhft, rFkk izR;sd oxZ dk mnkgj.k fyf[k,A
eksukslSdsjkbMks dk ukedj.k fyf[k,aA ¼2$2¾4½
Classify carbohydrates and write examples of each class write the nomenclature of
Monosaccharide
vFkok/ OR
[kk| ifjj{kd dk mnkgj.k lfgr o.kZu dhft,A
Describe food preservative in detail with examples.
20½ ik'pqjkbts'ku dks ifjHkkf"kr dhft,A bldh /kkj.k fof/k dk foLrkj ls o.kZu
dhft,A ¼2$2¾4½
Define pasteurization and describe its holding method in detail.
vFkok/ OR
psM~Mkj iuhj cukus dh fof/k dk foLrkj ls o.kZu dhft,A
Describe in detail the method of making chaddar paneer .