Rajasthan Board Class 12 Question Paper 2023 Agriculture Chemistry

Rajasthan Board

QUESTION
PAPER

Zm_m§H$ Roll No.

Tear Here
Sl.No. :

No. of Questions – 20 SS–38–Ag.Chem.
No. of Printed Pages – 7

Cƒ _mÜ`{_H$ narjm, 2023
SENIOR SECONDARY EXAMINATION, 2023
H¥${f agm¶Z {dkmZ

TEAR HERE TO OPEN THE QUESTION PAPER
AGRICULTURE CHEMISTRY
g_` : 3 KÊQ>o 15 {‘ZQ>

àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$m‹S>|
nyUmªH$ : 56

narjm{W©`m| Ho$ {bE gm_mÝ` {ZX}e …
GENERAL INSTRUCTIONS TO THE EXAMINEES :
1) narjmWu gd©àW_ AnZo àíZ nÌ na Zm_m§H$ A{Zdm`©V… {bI| &
Candidate must write first his / her Roll No. on the question paper compulsorily.
2) g^r àíZ A{Zdm`© h¡ &
All the questions are compulsory.
3) àË`oH$ àíZ H$m CÎma Xr JB© CÎma-nwpñVH$m _| hr {bI| &
Write the answer to each question in the given answer-book only.
4) {OZ àíZm| _| AmÝV[aH$ IÊS> h¢, CZ g^r Ho$ CÎma EH$ gmW hr {bI| &
For questions having more than one part, the answers to those parts are to be
written together in continuity.
5) àíZ nÌ Ho$ {hÝXr d A§J«oOr ê$nmÝVa _| {H$gr àH$ma H$s Ìw{Q> / AÝVa / {damoYm^mg hmoZo na {hÝXr ^mfm Ho$
àíZ H$mo ghr _mZ| &
If there is any error / difference / contradiction in Hindi & English version of the
`hm± go H$m{Q>E

question paper, the question of the Hindi version should be treated valid.
6) àíZ H$m CÎma {bIZo go nyd© àíZ H$m H«$‘m§H$ Adí¶ {bI|&
Write down the serial number of the question before attempting it.

SS-38-Ag.Chem. 3038 [ Turn Over

2
IÊS> - A
SECTION - A
dñVw{Zð> àíZ : (Multiple Choice Questions)
1) {ZåZ{b{IV àíZm| ‘| CÎma H$m ghr {dH$ën M¶Z H$a CÎma nwpñVH$m ‘| {b{IE &
In the following questions, select the correct answer and write it in the answer
book.
i) ‘¥Xm dm¶w ‘| Am°³grOZ H$s à{VeV ‘mÌm nmB© OmVr h¡ - [1]
(A) 79.01 (~) 20.30
(g) 0.03 (X) 0.30
The percentage of oxygen found in soil air is -
(A) 79.01 (B) 20.30
(C) 0.03 (D) 0.30
ii) {Oßg‘ ‘| gë’$a H$s à{VeV ‘mÌm nmB© OmVr h¡ - [1]
(A) 23.20 (~) 14.20
(g) 18.60 (X) 11.10
The percentage of sulfur found in gypsum is -
(A) 23.20 (B) 14.20
(C) 18.60 (D) 11.10
iii) nmBamBQ> H$m amgm¶{ZH$ gyÌ h¡ - [1]
(A) CaS5 (~) FeS2
(g) Ca(OH)2 (X) FeSO4
The chemical formula of pyrite is ________
(A) CaS5 (B) FeS2
(C) Ca(OH)2 (D) FeSO4
iv) hmBS´>moOZ VËd Ho$ A{dîH$maH$ h¡ - [1]
(A) gmg ~) S>r - í¶mga
(g) B©. {J«g (X) n¡Q>agZ
Discover of Hydrogen element is -
(A) SAS (B) D-Shysar
(C) E. Gris (D) Patterson

SS-38-Ag.Chem. 3038

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v) XbhZr ’$gbm| H$s O‹S>mo ‘| OrdmUw nmE OmVo h¡ - [1]
(A) EOmoQ>mo~¡³Q>a (~) ñQ´>oßQ>moH$moH$g
(g) ³bmoñQ´>r{S>¶‘ (X) amBOmo{~¶‘
Bacteria are found in the roots of legume crops :
(A) Azotobactor (B) Streptococcus
(C) Clostridium (D) Rhizobium
vi) nm¡Ym| ‘| {dQ>m‘rZ gr Ho$ g§íbofU Ho$ {bE Amdí¶H$ nmofH$ VËd h¡ - [1]
(A) gmo{S>¶‘ (~) ‘mo{bpãS>Z‘
(g) H$mo~mëQ> (X) ZmBQ´>mO
o Z
An essential nutrient for the synthesis of vitamin C in plants.
(A) Sodium (B) Molybdenum
(C) Cobalt (D) Nitrogen
vii) ^maV ‘|o Cd©aH$ CËnmXZ H$s ewê$AmV hþB©- [1]
(A) gZ² 1956 (~) gZ² 1967
(g) gZ² 1906 (X) gZ² 1922
Fertilizer production started in India -
(A) Year 1956 (B) Year 1967
(C) Year 1906 (D) Year 1922
viii) ‘Zwî¶ Ho$ Am±Ì ag ‘| EÝOmB‘ nm¶m OmVm h¡ - [1]
(A) ‘mëQ>og (~) Q>m¶{bZ
(g) bmBnog (X) nopßgZ
An enzyme found in human intestine Juice is -
(A) Maltase (B) Tylen
(C) Lipase (D) Pepsin
ix) Jm¶ Ho$ XÿY H$m Amno{jH$ KZËd hmoVm h¡ - [1]
(A) 1.040 go 1.042 (~) 1.060 go 1.062
(g) 1.032 go 1.034> (X) 1.028 go 1.030
Specific gravity of Cow milk is -
(A) 1.040 to 1.042 (B) 1.060 to 1.062
(C) 1.032 to 1.034> (D) 1.028 to1.030

SS-38-Ag.Chem. 3038 [ Turn Over

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2) [aº$ ñWmZm| H$s ny{V© H$s{OE -
Fill in the blanks -
i) Aåbr¶ ‘¥Xm ‘| MwZm XoZo go ‘¥Xm _____ Ordm| H$s g{H«$¶Vm ~‹T> OmVr h¡>& [1]
Giving lime to acidic soil increases the activity of soil ______organisms.
ii) H$mobm°BS> agm¶Z Ho$ _____ OZH$ ‘mZo OmVo h¢ & [1]
_________ is the father of colloid chemistry.
iii) ZmBQ´>moOZ H$s H$‘r go nm¡Yo _____ ah OmVo h¢ & [1]
Plants remain _________ due to deficiency of Nitrogen.
iv) Kr ‘| {deof gwJ§Y _____ Ho$ H$maU hmoVr h¡ & [1]
The special aroma in Ghee is due to _______.

3) {ZåZ{b{IV àíZm| Ho$ CÎma EH$ eãX ¶m EH$ n§{º$ ‘| {b{IE -
Write the answer of the following questions in one word or one line -
i) H$moB© EH$ Aåbr¶ Cd©aH$ H$m Zm‘ {b{IE & [1]
Write the name of any one acidic fertilizer.
ii) Q>moÊS> XÿY H$mo n[a^m{fV H$s{OE & [1]
Define Toned milk.
iii) S>mB‘oWmoEQ> nr‹S>H$Zm^r Ho$ à¶moJ Ho$ níMmV à{Vjm Ad{Y {b{IE & [1]
Write the Waiting period after using the Dimethoate pesticide.
iv) ZmBQ´>oQ> ¶w³V Ob Ho$ Cn¶moJ go ~ƒm| ‘| H$m¡Zgm amoJ hmo OmVm h¡ & [1]
Which disease occurs in children due to the use of nitrate rich water.
v) H$sQ>ZmeH$ agm¶Zm| Ho$ {S>ã~o na nrbo a§J H$m g§Ho$V {H$go B§{JV H$aVm h¡ & [1]
What does the Yellow Colour Sign on the box of pesticide chemicals indicate?
vi) ݶyp³bH$ Aåb H$m H$moB© EH$ àH$ma {b{IE & [1]
Write any one type of nucleic acid.
vii) ‘Zwî¶ ‘| ~oar-~oar amoJ {H$g {dQ>m{‘Z H$s H$‘r go hmoVm h¡ & [1]
Beri-Beri disease in humans is caused by the deficiency of which vitamin.
viii) ‘moZmog¡Ho$amBS²>g H$m gm‘mݶ gyÌ {b{IE & [1]
Write the general formula of Monosaccharides.

SS-38-Ag.Chem. 3038

5
IÊS> - ~
SECTION - B
bKwÎmamË‘H$ àíZ (CÎma eãX gr‘m bJ^J 50 eãX)
Short answer type questions (Answer word limit approximately 50 words).

4) A‘moZrH$aU H$mo g‘PmBE & [1½]
Explain Ammonification.

5) ‘¥Xm OrdmUw Ho$ H$moB© VrZ H$m¶© {b{IE & [3×½=1½]
Write any three functions of soil bacteria.

6) BbmBQ> g‘yh H$s n§{º$ g§aMZm H$m Zm§‘m{H$V {MÌ ~ZmBE & [1½]
Draw a labelled diagram of the row structure of Illite group.

7) H$mobm°BS> Ho$ H$moB© VrZ JwU {b{IE & [½+½+½=1½]
Write any three properties of colloids.

8) Am¶Z {d{Z‘¶ H$m ‘hËd {b{IE & [1½]
Write the importance of ion exchange.

9) ‘¥Xm ‘| nm¶o OmZo dmbo H$moB© VrZ YZm¶Zm| Ho$ Zm‘ {b{IE & [3×½=1½]
Write the names of any three cations found in soil.

10) ‘¥Xm nr-EM H$m gyú‘Ordm| na à^md g‘PmBE & [1½]
Explain the effect of Soil pH on micro-organisms.

11) C^¶ à{VamoYr {db¶Z Ho$ JwU {b{IE & [¾+¾=1½]
Write the characteristics of buffer solution.

SS-38-Ag.Chem. 3038 [ Turn Over

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12) O¡{dH$ ImX H$m ‘¥Xm Ho$ ^m¡{VH$ JwUm| na H$moB© VrZ à^md {b{IE & [½+½+½=1½]
Write any three effects of organic manure on physical properties of soil.

13) O¡d-Cd©aH$ Ho$ H$moB© VrZ bm^ {b{IE & [3×½=1½]
Write any three advantages of bio-fertilizers.

14) ‘mBH$moamBOm na g§{já {Q>ßnUr {b{IE & [1½]
Write short note on Mycorrhiza.

15) IoVm| ‘| d‘uH$ånmoñQ> S>mbZo H$s {d{Y {b{IE & [1½]
Write the method of applying vermicompost in the fields.

IÊS> - g
SECTION - C
XrK© CÎmar¶ àíZ (eãX gr‘m bJ^J 100 eãX)
Long answer type questions (Word limit approximately 100 words).

16) Am¾o¶ MQ²>Q>mZ H$s n[a^mfm VWm BgH$s {deofVmE§ {b{IE & [1+2=3]
Write the definition of Igneous rock and its characteristics.

17) {b{nS> H$mo n[a^m{fV H$s{OE VWm BgH$m dJuH$aU {b{IE & [1+2=3]
Define lipid and write its classification.

18) H¥${Ì‘ XÿY go ³¶m A{^àm¶: h¡ VWm Bggo hmoZo dmbr hm{Z¶m± {b{IE ? [1+2=3]
What is meant by synthetic Milk and Write its disadvantages?

SS-38-Ag.Chem. 3038

7
IÊS> - X

SECTION - D

{Z~ÝYmË‘H$ àíZ (eãX gr‘m bJ^J 250 eãX)
Essay type questions (Word limit approximately 250 words).

19) ¶y[a¶m Cd©aH$ H$m g§JR>Z, H$moB Xmo JwU, ‘¥Xm A{^{H«$¶m VWm ’$gbm| na n‹S>Zo dmbo {H$Ýht Mma à^mdm| H$m dU©Z
H$s{OE & [1+1+1+1=4]

Describe the composition, any two properties, soil reaction and any four effects
on crops of Urea fertilizer.

AWdm/OR
gë’o$Q> Am°’$ nmoQ>me Cd©aH$ H$m g§JR>Z, H$moB© Xmo JwU, ‘¥Xm A{^{H«$¶m VWm ’$gbm§o na n‹S>Zo dmbo {H$Ýhr Mma
à^mdm| H$m dU©Z H$s{OE &
Describe the composition, any two properties, soil reaction and any four effects
on crops of sulphate of potash.

20) Ob àXÿfU H$mo g‘PmBE & BgHo$ {H$Ýhr VrZ à^mdm| H$m dU©Z H$s{OE & [1+3=4]

Explain water pollution. Describe any three effects.

AWdm/OR
‘¥Xm àXÿfU H$mo g‘PmBE & BgHo$ {H$Ýhr VrZ à^mdm| H$m dU©Z H$s{OE &

Explain soil pollution. Describe any three effects.

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SS-38-Ag.Chem. 3038

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