Rajasthan Board Class 12 Question Paper 2019 Agriculture Chemistry
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Rajasthan Board Class 12 Question Paper 2019 Agriculture Chemistry – Text
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Page 1
Zm_m§H$ Roll No.
Tear Here
Sl.No. :
No. of Questions 30 SS38Ag.Chem.
No. of Printed Pages 7
C _mÜ`{_H$ narjm, 2019
SENIOR SECONDARY EXAMINATION, 2019
H¥${f agm¶Z {dkmZ
TEAR HERE TO OPEN THE QUESTION PAPER
AGRICULTURE CHEMISTRY
g_` : 3¼ KÊQ>o
àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$mS>|
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 hb H$aZo A{Zdm`© h¡ &
All the questions are compulsory.
3) àË`oH$ 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$mo ghr _mZ| &
If there is any error / difference / contradiction in Hindi & English versions of
`hm± go H$m{Q>E
the question paper, the question of Hindi version should be treated valid.
SS-38-Ag.Chem. 1330 [ Turn Over
Tear Here
Sl.No. :
No. of Questions 30 SS38Ag.Chem.
No. of Printed Pages 7
C _mÜ`{_H$ narjm, 2019
SENIOR SECONDARY EXAMINATION, 2019
H¥${f agm¶Z {dkmZ
TEAR HERE TO OPEN THE QUESTION PAPER
AGRICULTURE CHEMISTRY
g_` : 3¼ KÊQ>o
àíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$mS>|
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 hb H$aZo A{Zdm`© h¡ &
All the questions are compulsory.
3) àË`oH$ 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$mo ghr _mZ| &
If there is any error / difference / contradiction in Hindi & English versions of
`hm± go H$m{Q>E
the question paper, the question of Hindi version should be treated valid.
SS-38-Ag.Chem. 1330 [ Turn Over
Page 2
2
6) àíZ g§»`m A§H$ àË`oH$ àíZ
1 - 13 1
14 - 24 2
25 - 27 3
28 - 30 4
Q. Nos. Marks per question
1 - 13 1
14 - 24 2
25 - 27 3
28 - 30 4
7) àíZ H«$_m§H$ 28, 29 d 30 | AmÝV[aH$ {dH$ën h¢ &
Question Nos. 28, 29 and 30 have internal choices.
1) ¥Xm H$m OÝ, {Zm©U VWm {dVaU H$m Aܶ¶Z ¥Xm {dkmZ H$s {H$g emIm | {H$¶m OmVm h¡? [1]
In which branch of soil science the origin of soil, formation and distribution is
studied.
2) gmmݶV¶m I{ZO ¥Xm §o {H$VZm à{VeV Ordm§e nXmW© nm¶m OmVm h¡? [1]
Generally, how much percent of the organic matter found in the mineral soil?
3) ¥Xm H$mobmBS²>g | AgmZ JwUm| dmbo AUwAm| Ho$ ܶ AmH$f©U H$mo ³¶m H$hVo h¡? [1]
What is called the attraction between molecules of dissimilar properties in soil
colloides?
4) ¥Xm | A{YH$m§e nm¶o OmZo dmbo Xmo YZm¶Z {b{IE & [1]
Write the two cations mostly found in the soil.
SS-38-Ag.Chem. 1330
6) àíZ g§»`m A§H$ àË`oH$ àíZ
1 - 13 1
14 - 24 2
25 - 27 3
28 - 30 4
Q. Nos. Marks per question
1 - 13 1
14 - 24 2
25 - 27 3
28 - 30 4
7) àíZ H«$_m§H$ 28, 29 d 30 | AmÝV[aH$ {dH$ën h¢ &
Question Nos. 28, 29 and 30 have internal choices.
1) ¥Xm H$m OÝ, {Zm©U VWm {dVaU H$m Aܶ¶Z ¥Xm {dkmZ H$s {H$g emIm | {H$¶m OmVm h¡? [1]
In which branch of soil science the origin of soil, formation and distribution is
studied.
2) gmmݶV¶m I{ZO ¥Xm §o {H$VZm à{VeV Ordm§e nXmW© nm¶m OmVm h¡? [1]
Generally, how much percent of the organic matter found in the mineral soil?
3) ¥Xm H$mobmBS²>g | AgmZ JwUm| dmbo AUwAm| Ho$ ܶ AmH$f©U H$mo ³¶m H$hVo h¡? [1]
What is called the attraction between molecules of dissimilar properties in soil
colloides?
4) ¥Xm | A{YH$m§e nm¶o OmZo dmbo Xmo YZm¶Z {b{IE & [1]
Write the two cations mostly found in the soil.
SS-38-Ag.Chem. 1330
Page 3
3
5) ~agr H$s $gb Ho$ {bE ^y{ H$m Cn¶wº$ nr.EM. mZ {b{IE & [1]
Write the suitable pH value of soil for Barseem crop.
6) {Oßg H$m amgm¶{ZH$ gyÌ {b{IE & [1]
Write the chemical formula of gypsum.
7) nm¡Ymo§ Ho$ {bE H$moB© Xmo w»¶ nmofH$ VÎdm| Ho$ Zm {b{IE & [½+½=1]
Write the name of any two major nutrients for plants.
8) Am½Zo¶ Ed§ AdgmXr MÅ>mZm| | amgm¶{ZH$ Ed§ ^m¡{VH$ n[adV©Zm| Ho$ CnamÝV ~Zr MÅ>mZ H$m Zm {b{IE & [1]
Write the name of the rock formed after chemical and physical changes in the
igneous and sedimentary rocks.
9) Zrb h[aV e¡dmb {H$g $gb Ho$ {bE gdm©{YH$ Cn¶moJr h¡? $ [1]
Blue green algae is the most useful for which crop?
10) ~bwB© XmoQ> ¥Xm H$s YZm¶Z {d{Z¶ jVm {b{IE? $ [1]
Write the cation exchange capacity of the sandy loam soil.
11) YmZ | Ioam amoJ {H$g VÎd H$s H$r go hmoVm h¡? [1]
Which nutrient deficiency Khaira disease is found in paddy.
12) ¥Xm §o H$m~©{ZH$ nXmW© H$s mÌm Ed§ YZm¶Z {d{Z¶ jVm Ho$ gå~ÝY H$mo gPmB¶o & [1]
Explain the relationship in between the quantity of organic matter and cation
exchange capacity.
SS-38-Ag.Chem. 1330 [ Turn Over
5) ~agr H$s $gb Ho$ {bE ^y{ H$m Cn¶wº$ nr.EM. mZ {b{IE & [1]
Write the suitable pH value of soil for Barseem crop.
6) {Oßg H$m amgm¶{ZH$ gyÌ {b{IE & [1]
Write the chemical formula of gypsum.
7) nm¡Ymo§ Ho$ {bE H$moB© Xmo w»¶ nmofH$ VÎdm| Ho$ Zm {b{IE & [½+½=1]
Write the name of any two major nutrients for plants.
8) Am½Zo¶ Ed§ AdgmXr MÅ>mZm| | amgm¶{ZH$ Ed§ ^m¡{VH$ n[adV©Zm| Ho$ CnamÝV ~Zr MÅ>mZ H$m Zm {b{IE & [1]
Write the name of the rock formed after chemical and physical changes in the
igneous and sedimentary rocks.
9) Zrb h[aV e¡dmb {H$g $gb Ho$ {bE gdm©{YH$ Cn¶moJr h¡? $ [1]
Blue green algae is the most useful for which crop?
10) ~bwB© XmoQ> ¥Xm H$s YZm¶Z {d{Z¶ jVm {b{IE? $ [1]
Write the cation exchange capacity of the sandy loam soil.
11) YmZ | Ioam amoJ {H$g VÎd H$s H$r go hmoVm h¡? [1]
Which nutrient deficiency Khaira disease is found in paddy.
12) ¥Xm §o H$m~©{ZH$ nXmW© H$s mÌm Ed§ YZm¶Z {d{Z¶ jVm Ho$ gå~ÝY H$mo gPmB¶o & [1]
Explain the relationship in between the quantity of organic matter and cation
exchange capacity.
SS-38-Ag.Chem. 1330 [ Turn Over
Page 4
4
13) EH$ Cn^mo³Vm XÿY | nmZr H$s {bmdQ> H$m nVm bJmZo Ho$ {bE {H$g CnH$aU H$m à¶moJ H$aoJm? [1]
Which device is used by a consumer to detect the adulteration of water in the
milk?
14) duH$ånmoñQ> ~ZmZo H$s {d{Y H$mo gPmB¶o & [2]
Explain the method of vermicompost preparation.
15) $gbm| | ZÌOZ H$s H$r Ho$ H$moB© Mma bjU {b{IE & [4×½=2]
Write any four symptoms of nitrogen deficiency in crops.
16) dgm {dbo¶ Xmo {dQ>m{Ýg Ho$ w»¶ òmoV Ed§ BZH$s H$r go hmoZo dmbo amoJ {b{IE & [2×½+2×½=2]
Write main sources of two fat soluble vitamins and disease due to their deficiency.
17) ݶy{³bH$ Aåb ³¶m h¡? BgHo$ Xmo àH$ma {b{IE & [1+2×½=2]
What is nucleic acid? Write its two types.
18) nmXn d¥[Õ {Z¶mH$ ³¶m h¡? BgHo$ Xmo CXmhaU {b{IE & [1+2×½=2]
What is plant growth regulator? Write its two examples.
SS-38-Ag.Chem. 1330
13) EH$ Cn^mo³Vm XÿY | nmZr H$s {bmdQ> H$m nVm bJmZo Ho$ {bE {H$g CnH$aU H$m à¶moJ H$aoJm? [1]
Which device is used by a consumer to detect the adulteration of water in the
milk?
14) duH$ånmoñQ> ~ZmZo H$s {d{Y H$mo gPmB¶o & [2]
Explain the method of vermicompost preparation.
15) $gbm| | ZÌOZ H$s H$r Ho$ H$moB© Mma bjU {b{IE & [4×½=2]
Write any four symptoms of nitrogen deficiency in crops.
16) dgm {dbo¶ Xmo {dQ>m{Ýg Ho$ w»¶ òmoV Ed§ BZH$s H$r go hmoZo dmbo amoJ {b{IE & [2×½+2×½=2]
Write main sources of two fat soluble vitamins and disease due to their deficiency.
17) ݶy{³bH$ Aåb ³¶m h¡? BgHo$ Xmo àH$ma {b{IE & [1+2×½=2]
What is nucleic acid? Write its two types.
18) nmXn d¥[Õ {Z¶mH$ ³¶m h¡? BgHo$ Xmo CXmhaU {b{IE & [1+2×½=2]
What is plant growth regulator? Write its two examples.
SS-38-Ag.Chem. 1330
Page 5
5
19) ¥Xm àXÿfU Ho$ Mma à^mdm| H$mo gPmB¶o & [4×½=2]
Explain four effects of soil pollution.
20) m°ÝQ>moarbmoZmBQ> gyh H$s n§{º$ g§aMZm H$m Zmm§{H$V {MÌ ~ZmB¶o & [1+1=2]
Draw a labelled diagram of the row structure of the montmorillonite group.
21) bo³Q>morQ>a Ed§ bo³Q>morQ>a Oma H$m {MÌ ~ZmB¶o & [1+1=2]
Draw a diagram of lactometer and lactometer jar.
22) ¥Xm {Zm©U H$maH$m| H$mo dJuH¥$V MmQ>© Ed§ Zmm§{H$V {MÌ Ûmam àX{e©V H$s{OE & [1+1=2]
Demonstrate the soil forming factors by classification chart and labelled diagram.
23) ¥Xm | ZmBQ´>rH$aU H$mo gPmB¶o? [1+1=2]
Explain nitrification in soil.
24) C^¶ à{VamoY H$m ¥Xm | hÎd {b{IE & [1+1=2]
Write the importance of soil buffering.
SS-38-Ag.Chem. 1330 [ Turn Over
19) ¥Xm àXÿfU Ho$ Mma à^mdm| H$mo gPmB¶o & [4×½=2]
Explain four effects of soil pollution.
20) m°ÝQ>moarbmoZmBQ> gyh H$s n§{º$ g§aMZm H$m Zmm§{H$V {MÌ ~ZmB¶o & [1+1=2]
Draw a labelled diagram of the row structure of the montmorillonite group.
21) bo³Q>morQ>a Ed§ bo³Q>morQ>a Oma H$m {MÌ ~ZmB¶o & [1+1=2]
Draw a diagram of lactometer and lactometer jar.
22) ¥Xm {Zm©U H$maH$m| H$mo dJuH¥$V MmQ>© Ed§ Zmm§{H$V {MÌ Ûmam àX{e©V H$s{OE & [1+1=2]
Demonstrate the soil forming factors by classification chart and labelled diagram.
23) ¥Xm | ZmBQ´>rH$aU H$mo gPmB¶o? [1+1=2]
Explain nitrification in soil.
24) C^¶ à{VamoY H$m ¥Xm | hÎd {b{IE & [1+1=2]
Write the importance of soil buffering.
SS-38-Ag.Chem. 1330 [ Turn Over
Page 6
6
25) ¥Xm | {ZaÝVa ¶y[a¶m Cd©aH$ Ho$ Cn¶moJ go ³¶m à^md nS>Vm h¡ & Bg àH$ma H$s ¥XmAm| H$mo gwYmaZo hoVw ¥Xm
gwYmaH$ H$m Zm {bIH$a amgm¶{ZH$ grH$aUm| Ûmam gPmB¶o & [½+½+2=3]
What is the effect of continuous use of urea fertilizer in soil. Write the name of
amendment used for reclaim such type soils and explain it by chemical reactions.
26) XÿY J© H$aZo na $Q> OmVm h¡ & Bg gñ¶m go ~Mmd hoVw H$m¡Zgm narjU {H$¶m OmZm Amdí¶H$ h¡ VWm BgH$s
à¶moJ {d{Y H$m dU©Z H$s{OE & [1+2=3]
The milk explodes on heating. Which test is essential to avoid this problem and
describe its experimental method.
27) AZmO dmbr $gbm| §o ZÌOZ pñWarH$aU H$aZo dmbo O¡d Cd©aH$ H$m Zm {b{IE VWm BgH$s à¶moJ H$s {d{Y
H$m dU©Z H$s{OE & [1+1+1=3]
Write the name of biofertilizer used in cereals crops for nitrogen fixation and
describe its method of application.
28) dm¶w àXÿfU amoH$Zo Ho$ AmR> Cnm¶m| H$m dU©Z H$s{OE & [8×½=4]
Describe the eight measures to control air pollution.
AWdm/OR
¥Xm àXÿfU {Z¶ÝÌU Ho$ AmR> Cnm¶m| H$m dU©Z H$s{OE &
Describe eight measures of soil pollution control.
SS-38-Ag.Chem. 1330
25) ¥Xm | {ZaÝVa ¶y[a¶m Cd©aH$ Ho$ Cn¶moJ go ³¶m à^md nS>Vm h¡ & Bg àH$ma H$s ¥XmAm| H$mo gwYmaZo hoVw ¥Xm
gwYmaH$ H$m Zm {bIH$a amgm¶{ZH$ grH$aUm| Ûmam gPmB¶o & [½+½+2=3]
What is the effect of continuous use of urea fertilizer in soil. Write the name of
amendment used for reclaim such type soils and explain it by chemical reactions.
26) XÿY J© H$aZo na $Q> OmVm h¡ & Bg gñ¶m go ~Mmd hoVw H$m¡Zgm narjU {H$¶m OmZm Amdí¶H$ h¡ VWm BgH$s
à¶moJ {d{Y H$m dU©Z H$s{OE & [1+2=3]
The milk explodes on heating. Which test is essential to avoid this problem and
describe its experimental method.
27) AZmO dmbr $gbm| §o ZÌOZ pñWarH$aU H$aZo dmbo O¡d Cd©aH$ H$m Zm {b{IE VWm BgH$s à¶moJ H$s {d{Y
H$m dU©Z H$s{OE & [1+1+1=3]
Write the name of biofertilizer used in cereals crops for nitrogen fixation and
describe its method of application.
28) dm¶w àXÿfU amoH$Zo Ho$ AmR> Cnm¶m| H$m dU©Z H$s{OE & [8×½=4]
Describe the eight measures to control air pollution.
AWdm/OR
¥Xm àXÿfU {Z¶ÝÌU Ho$ AmR> Cnm¶m| H$m dU©Z H$s{OE &
Describe eight measures of soil pollution control.
SS-38-Ag.Chem. 1330
Page 7
7
29) Am°{bJmog¡Ho$amBS²>g go Amn ³¶m gPVo h¡? BgH$m {dñV¥V dU©Z H$s{OE & [1+3=4]
What do you mean by oligosaccharides? Describe it in detail.
AWdm/OR
nm°brg¡Ho$amBS²>g go Amn ³¶m gPVo h¡? BgH$m {dñV¥V dU©Z H$s{OE &
What do you mean by polysaccharides? Describe it in detail.
30) S>mB© Amo{Z¶ $m°ño$Q> H$m g§JR>Z, JwU, ¥Xm o§ A{^{H«$¶m Ed§ $gbm| na à^md H$m dU©Z H$s{OE &[1×4=4]
Describe the composition, properties, soil reaction and effect on crops of dia
ammonium phosphate.
AWdm/OR
å¶yaoQ> Am°$ nmoQ>me H$m g§JR>Z, JwU, ¥Xm | A{^{H«$¶m Ed§ $gbm| na à^md H$m dU©Z H$s{OE &
Describe the composition, properties, soil reaction and effect on crops of murate
of potash.
yyy
SS-38-Ag.Chem. 1330
29) Am°{bJmog¡Ho$amBS²>g go Amn ³¶m gPVo h¡? BgH$m {dñV¥V dU©Z H$s{OE & [1+3=4]
What do you mean by oligosaccharides? Describe it in detail.
AWdm/OR
nm°brg¡Ho$amBS²>g go Amn ³¶m gPVo h¡? BgH$m {dñV¥V dU©Z H$s{OE &
What do you mean by polysaccharides? Describe it in detail.
30) S>mB© Amo{Z¶ $m°ño$Q> H$m g§JR>Z, JwU, ¥Xm o§ A{^{H«$¶m Ed§ $gbm| na à^md H$m dU©Z H$s{OE &[1×4=4]
Describe the composition, properties, soil reaction and effect on crops of dia
ammonium phosphate.
AWdm/OR
å¶yaoQ> Am°$ nmoQ>me H$m g§JR>Z, JwU, ¥Xm | A{^{H«$¶m Ed§ $gbm| na à^md H$m dU©Z H$s{OE &
Describe the composition, properties, soil reaction and effect on crops of murate
of potash.
yyy
SS-38-Ag.Chem. 1330
Page 8
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Document Details
| Board / Org | Rajasthan Board |
| Exam | Class 12 |
| Type | Question Paper |
| Pages | 8 |
| Updated | 30 Apr 2026 |