Rajasthan Board 12th Agricultural Chemistry Sample Paper 2021

mPp ek/;fed ijh{kk ekWMy iz'u&i= 2020&21
SENIOR SECONDARY EXAMINATION,MODEL QUESTION PAPER-2021
d`f"k jlk;u
AGRICULTURAL CHEMISTRY

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 compulasory.

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 answer 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 vad izR;sd iz'u dqy vad Hkkj
[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

[k.M v
Section A

1- uhps fn;s x;s iz'uksa esa mÙkj dk lgh fodYi p;u dj mRrj iqfLrdk esa fyf[k,A
Write the answer of the following given multiple choice questions in the answer
book.

(i) ok;qe.My ¼HkkjkRed½ esa lcls vf/kd izfr'krrk gksrh gSa &
¼v½ ukbVªkstu ¼c½ dkcZu MkbvkWDlkbM ¼l½ tyok"i ¼n½ vkWDlhtu ¼1½

Which of the following has highest percentage in atmosphere (quantitative)-
(A) Nitrogen (B) Carbondioxide (C) Watervapours (D) Oxygen

(ii) e`nk esa thoka'k inkFkZ ds izeq[k L=ksr gS &
¼v½ dsoy ikS/ks ¼c½ ikS/ks ,oa tUrq ¼l½ dsoy tUrq ¼n½ buesa ls dksbZ ugha ¼1½

What is the main source of organic matter in soil ?
(A) Only Plants (B) Plants and Animals (C) Only animals (D) None of these

(iii) pH ,oa pOH dk ;ksx lnSo gksrk gS &
¼v½ 10 ¼c½ 14 ¼l½ 8 ¼n½ 12 ¼1½

Sum of pH and pOH is always -
(A) 10 (B) 14 (C) 8 (D) 12

(iv) vEyh; e`nk dk pH eku gksrk gS &
¼v½ 7 ls de ¼c½ 8-5 ¼l½ 8-5 ls 10 ¼n½ mijksDr esa ls dksbZ ugha ¼1½

pH Value of acidic soil is -
(A) Less than 7 (B) 8.5 (C) 8.5 to 10.00 (D) None of these

(v) vf/kdka'k ikS/ks u=tu dks fdl :i esa mi;ksx djrs gS &
¼v½ NH2 ¼c½ N2 ¼l½ NO3 ¼n½ NO2 ¼1½

Which form of nitrogen is absorbed by most of the plants -
(A) NH2 (B) N2 (C) NO3 (D) NO2

(vi) lksfM;e ukbVªVs moZjd dk e`nk ij izHkko iM+rk gS &
¼v½ {kkjh; ¼c½ vEyh; ¼l½ mnklhu ¼n½ dksbZ ugha ¼1½

Effect of Sodium nitrate fertilizer on the soil is -
(A) Alkaline (B) Acidie (C) Neutral (D) None

(vii) fuEu esa ls dkSu iksyhlSdsjkbM ugha gSa &
¼v½ LVkpZ ¼c½ Xykbdkstu ¼l½ ekYVkst ¼n½ lSY;wykst ¼1½

Which of the following is not a Polysaccharide -

(A) Starch (B) Glycogen (C) Maltose (D) Cellulose

(viii) ,tksyk dk mi;ksx dkSu lh Qly esa djrs gS &
¼v½ xsg¡w ¼c½ tkS ¼l½ eDdk ¼n½ /kku ¼1½

For which crop Azolla is used -
(A) Wheat (B) Barleg (C) Maize (D) Paddy

(ix) nw/k dk lQsn jax fdl dkj.k gksrk gS &
¼v½ dSfYl;e ¼c½ dSjksVhu ¼l½ QkLQksjl ¼n½ dSlhu ¼1½

Reason for the white colour of the milk is -
(A) Calcium (B) Carotene (C) Phosphorous (D) Caesin

(x) nw/k esa mifLFkr olk dh U;wure ek=k dk izfr'kr gSa &
¼v½ 5-0 ¼c½ 2-5 ¼l½ 3-0 ¼n½ 8-0 ¼1½

The percentage of minimum quantity of fat persent in the milk is -
(A) 5.0 (B) 2.5 (C) 3.0 (D) 8.0

iz'u la[;k 2 ls 8 rd iz'uksa ds mŸkj ,d iafDr esa nhft, %&
Q.No.2-8 Answer the following questions in one line:

2- e`nk esa Bksl inkFkksZa dk vk;ru fdruk gksrk gS \ 1
What is the volume of soild substances in soil ?
3- Xywdkst dk jklk;fud lw= fyf[k,A 1
Write chemical formula of glucose ?
4- pH 'kCn fdlus fn;k \ 1
Who founded word pH ?
5- mHk; izfrjks/k D;k gS \ 1
What is buffering ?
6- ikS/kksa esa QkWLQksjl dh deh dk ,d y{k.k fyf[k, \ 1
Write one symptoms of phosphorus deficiency in plants ?
7- flaxy lqij QkWLQsV moZjd dk jklk;fud lw= fyf[k, \ 1
Write the chemical formula of single super phosphote ?
8- dkcksZgkbMªsV~l dks ifjHkkf"kr dhft, \ 1
Define Carbohydrates.
iz'u 9 ls 11 esa fjDr LFkkuksa dh iwfrZ dj mRrj&iqfLrdk esa fyf[k, &
Fill in the Blanks of questions No. 9 to 11 in the given answer book.
-9- foPNsnu ds fy, vko';d --------------------------------------- rkiØe gSA 1
What is the required ...................................... temperature for decomposition .
10- tLrs dh deh ls /kku esa ----------------------- jksx gks tkrk gSA 1
Rice is affected by ......................... disease due to zinc deficiency .
11- Mh-,-ih- moZjd esa ------------------ izfr'kr ------------------- ukbVªkt
s u rFkk ------------------ izfr'kr QkLQksjl ik;k
tkrk gSA 1
DAP fertilizer has .................... percentage nitrogen and ...................... percentage phosphorus.

[k.M c
Section-B

12- e`nk ifjPNsfndk dk ukekafdr fp= cukb;s A 2
Draw a Labelled diagram of soil profile .
13- Qlyksa esa iksVk'k dh deh ds dksbZ pkj y{k.k fyf[k, A 2
Write any four symptoms of potassium deficiency in crops.
14- veksfu;e lYQsV moZjd dh e`nk esa vfHkfØ;k fyf[k, A 2
Write reaction of ammonium sulphate fertilizer in the soil.
15- ty foys; foVkfeu ij laf{kIr fVIi.kh fyf[k,A 2
Write short notes on water soluble vitamin .

[k.M l
Section-C

16- thoka'k inkFkksZa dk e`nk xq.koÙkk rFkk moZjrk ij izHkko dk o.kZu dhft,A 3
vFkok
lgthfodk ¼Symbiosis½ D;k gS \ lgthoh cSDVhfj;k e`nk esa ukbVªkstu dSls fLFkj djrk gSa\
Explain effect of organic matter on quality and fertility of soil.
or
What is symbiosis ? How Symbiotic bacteria fix nitrogen in soil ?
17- e`nk dh ih-,p- dks izHkkfor djus okys fdUgha rhu dkjdksa dk o.kZu dhft,A 3
vFkok
e`nk vfHkfØ;k dks ifjHkkf"kr dhft,A bldk d`f"k ¼[ksrh½ esa D;k egRo gS \
Describe any three factors which affect pH of soil.
or
Define soil reaction . what is its importance in Agriculture (farming) ?
18- lfØ; vEyrk ,oa fofue; vEyrk esa foHksn dhft,A vEyh; e`nk cuus ds dksbZ pkj dkj.k
fyf[k,A 3
vFkok
e`nk esa fujUrj ;wfj;k moZjd ds mi;ksx ls D;k izHkko iM+rk gSA bl izdkj dh e`nkvksa dks lq/kkjus
gsrq e`nk lq/kkjd dk uke fy[kdj jklk;fud lehdj.kksa }kjk le>kb;sA
Distinguish between active acidity and exchange acidity. Write any four causes of formation of
acidic soil.
or
What is the effect of continuous use of Urea fertilizer in soil. write the name of amendment used
for reclaim such type of soils and explain it by chemical reactions.
19- tSo&moZjd }kjk ew¡x ds cht mipkj dh fof/k fyf[k,A 3
vFkok
oehZdEiksLV cukus dh fof/k dks le>kb;sA
Write the method of seed treatment of green gram by bio-fertilizer.
or
Explain the method of preparation of vermicompost.

[k.M n
Section-D

20- vEyh; e`nk D;k gksrh gS \ vEyh; e`nk cuus ds D;k dkj.k gS \ budks dSls lq/kkjk tk
ldrk gS\ 4
vFkok
ikbjkbVl D;k gS \ ;g {kkjh; e`nzkvksa ds lq/kkj esa dSls lgk;d gS \
What is acidic soil ? what is the cause of the formation of acidic soil ? How can be, reclamed or
recycled ?
or
What is Pyrites ? How is helpful in reclaming sodic soils ?

21- [khl ds HkkSfrd xq.kksa dk o.kZu dhft,A ysDVksehVj ,oa ysDVksehVj tkj dk fp= cukb;sA 4
vFkok
flaFksfVd nw/k o vlyh ¼'kq)½ nw/k esa vUrj Li"V dhft,A Lopkfyr fVYV ¼uiuk½ ,oa ykWd LVkWij
dk fp= cukb;sA
Describe physical properties of colostrum. Draw a diagram of Lactometer and Lactometer Jar.
or
Differentiate between synthetic milk and pure milk. Draw a diagram of automatic measure and
Lock stopper.

[k.M ;
Section-E

22- ,Utkbe ls vki D;k le>rs gS \ ,Utkbeksa ds xq.k /keZ] fØ;k fof/k ,oa mi;ksfxrk dk o.kZu
dhft,\ 4
vFkok
fyfiM ls vki D;k le>rs gS \ buds oxhZdj.k ,oa tSfod dk;ksZa dk o.kZu dhft,A
What do you mean by enzymes ? Describe properties, mechanism and utility of enzymes.
or
What do you mean by Lipids ? Describe its classification and biological functions.

23- tSfod [kkn ,oa moZjdksa esa dksbZ pkj Hksn fyf[k,A 4
vFkok
jkbtksfc;e ,oa ,tksVkscsDVj tSo moZjdksa esa dksbZ pkj vUrj fyf[k,A
Write any four differences between organic manures and fertilizers.
or
Write any four differences between Rhizobium and Azotobector biofertilizers.