Class 10 Science: Question Paper for 2017 | Science Class 10 PDF Download

 Page 1


31/1 1 P.T.O. 
narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð 
>na Adí` {bIo§ & 
Candidates must write the Code on the 
title page of the answer-book. 
 Series HRK 
 H$moS> Z§.  
   
 
 
Code No. 
amob Z§. 
Roll No. 
 
 
 
 
 
 
 
 
 
 
 
 
g§H${bV narjm – II 
SUMMATIVE ASSESSMENT – II 
{dkmZ 
SCIENCE 
{ZYm©[aV g_` : 3 KÊQ>o   A{YH$V_ A§H$ : 90 
Time allowed : 3 hours Maximum Marks : 90 
 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 16 h¢ & 
? àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na 
{bI| & 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >36 àíZ h¢ & 
? H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| & 
? Bg  àíZ-nÌ  H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ &  àíZ-nÌ H$m {dVaU 
nydm©• _| 10.15 ~Oo {H$`m OmEJm &  10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo 
n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & 
? Please check that this question paper contains 16 printed pages. 
? Code number given on the right hand side of the question paper should be 
written on the title page of the answer-book by the candidate. 
? Please check that this question paper contains 36 questions. 
? Please write down the Serial Number of the question before 
attempting it. 
? 15 minute time has been allotted to read this question paper. The question 
paper  will  be  distributed  at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the 
students will read the question paper only and will not write any answer 
on the answer-book during this period. 
31/1
 
SET-1 
Page 2


31/1 1 P.T.O. 
narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð 
>na Adí` {bIo§ & 
Candidates must write the Code on the 
title page of the answer-book. 
 Series HRK 
 H$moS> Z§.  
   
 
 
Code No. 
amob Z§. 
Roll No. 
 
 
 
 
 
 
 
 
 
 
 
 
g§H${bV narjm – II 
SUMMATIVE ASSESSMENT – II 
{dkmZ 
SCIENCE 
{ZYm©[aV g_` : 3 KÊQ>o   A{YH$V_ A§H$ : 90 
Time allowed : 3 hours Maximum Marks : 90 
 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 16 h¢ & 
? àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na 
{bI| & 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >36 àíZ h¢ & 
? H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| & 
? Bg  àíZ-nÌ  H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ &  àíZ-nÌ H$m {dVaU 
nydm©• _| 10.15 ~Oo {H$`m OmEJm &  10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo 
n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & 
? Please check that this question paper contains 16 printed pages. 
? Code number given on the right hand side of the question paper should be 
written on the title page of the answer-book by the candidate. 
? Please check that this question paper contains 36 questions. 
? Please write down the Serial Number of the question before 
attempting it. 
? 15 minute time has been allotted to read this question paper. The question 
paper  will  be  distributed  at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the 
students will read the question paper only and will not write any answer 
on the answer-book during this period. 
31/1
 
SET-1 
31/1 2 
gm_mÝ` {ZX}e : 
(i) Bg àíZ-nÌ H$mo Xmo ^mJm|, ^mJ A Am¡a ^mJ ~, _| ~m±Q>m J`m h¡ & AmnH$mo XmoZm| ^mJm| Ho$ 
àíZm| Ho$ CÎma {bIZo h¢ & 
(ii) g^r  àíZ A{Zdm`© h¢ & 
(iii) nyao àíZ-nÌ _| {H$gr àíZ _| H$moB© M`Z àmßV Zht h¡ & 
(iv) AmnH$mo  ^mJ A Am¡a ^mJ ~  Ho$ g^r àíZm| Ho$ CÎma n¥WH²$-n¥WH²$ ^mJ Ho$ AmYma na 
{bIZo h¢ &  
(v) ^mJ A Ho$ àíZ g§»`m 1 go 3 Ho$ àíZ EH$-EH$ A§H$ Ho$ h¢ & BZHo$ CÎma EH$ eãX AWdm 
EH$ dmŠ` _| X| & 
(vi) ^mJ A Ho$ àíZ g§»`m 4 go 6 Ho$ àíZ Xmo-Xmo A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
30 eãXm| _| XoZo h¢ & 
(vii) ^mJ A Ho$ àíZ g§»`m 7 go 18 Ho$ àíZ VrZ-VrZ A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
50 eãXm| _| XoZo h¢ & 
(viii) ^mJ A Ho$ àíZ g§»`m 19 go 24 Ho$ àíZ nm±M-nm±M A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J 
70 eãXm| _| XoZo h¢ & 
(ix) ^mJ ~ Ho$ àíZ g§»`m 25 go 33 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV ~hþ{dH$ënr àíZ 
h¢ & àË`oH$ àíZ EH$ A§H$ H$m h¡ & {XE JE Mma {dH$ënm| _| go AmnH$mo Ho$db EH$ g~go 
Cn`wº$ {dH$ën MwZZm h¡ & 
(x) ^mJ ~ Ho$ àíZ g§»`m 34 go 36 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV Xmo-Xmo A§H$m| Ho$ 
àíZ h¢ & BZHo$ CÎma g§{jßV _| XoZo h¢ & 
General Instructions : 
(i) The question paper comprises two Sections, A and B. You are to attempt 
both the sections. 
(ii) All questions are compulsory. 
(iii) There is no choice in any of the questions.  
(iv) All questions of Section A and all questions of Section B are to be 
attempted separately. 
(v) Question numbers 1 to 3 in Section A are one-mark questions. These are to 
be answered in one word or in one sentence. 
(vi) Question numbers 4 to 6 in Section A are two-marks questions. These are 
to be answered in about 30 words each.  
(vii) Question numbers 7 to 18 in Section A are three-marks questions. These 
are to be answered in about 50 words each. 
Page 3


31/1 1 P.T.O. 
narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð 
>na Adí` {bIo§ & 
Candidates must write the Code on the 
title page of the answer-book. 
 Series HRK 
 H$moS> Z§.  
   
 
 
Code No. 
amob Z§. 
Roll No. 
 
 
 
 
 
 
 
 
 
 
 
 
g§H${bV narjm – II 
SUMMATIVE ASSESSMENT – II 
{dkmZ 
SCIENCE 
{ZYm©[aV g_` : 3 KÊQ>o   A{YH$V_ A§H$ : 90 
Time allowed : 3 hours Maximum Marks : 90 
 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 16 h¢ & 
? àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na 
{bI| & 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >36 àíZ h¢ & 
? H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| & 
? Bg  àíZ-nÌ  H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ &  àíZ-nÌ H$m {dVaU 
nydm©• _| 10.15 ~Oo {H$`m OmEJm &  10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo 
n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & 
? Please check that this question paper contains 16 printed pages. 
? Code number given on the right hand side of the question paper should be 
written on the title page of the answer-book by the candidate. 
? Please check that this question paper contains 36 questions. 
? Please write down the Serial Number of the question before 
attempting it. 
? 15 minute time has been allotted to read this question paper. The question 
paper  will  be  distributed  at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the 
students will read the question paper only and will not write any answer 
on the answer-book during this period. 
31/1
 
SET-1 
31/1 2 
gm_mÝ` {ZX}e : 
(i) Bg àíZ-nÌ H$mo Xmo ^mJm|, ^mJ A Am¡a ^mJ ~, _| ~m±Q>m J`m h¡ & AmnH$mo XmoZm| ^mJm| Ho$ 
àíZm| Ho$ CÎma {bIZo h¢ & 
(ii) g^r  àíZ A{Zdm`© h¢ & 
(iii) nyao àíZ-nÌ _| {H$gr àíZ _| H$moB© M`Z àmßV Zht h¡ & 
(iv) AmnH$mo  ^mJ A Am¡a ^mJ ~  Ho$ g^r àíZm| Ho$ CÎma n¥WH²$-n¥WH²$ ^mJ Ho$ AmYma na 
{bIZo h¢ &  
(v) ^mJ A Ho$ àíZ g§»`m 1 go 3 Ho$ àíZ EH$-EH$ A§H$ Ho$ h¢ & BZHo$ CÎma EH$ eãX AWdm 
EH$ dmŠ` _| X| & 
(vi) ^mJ A Ho$ àíZ g§»`m 4 go 6 Ho$ àíZ Xmo-Xmo A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
30 eãXm| _| XoZo h¢ & 
(vii) ^mJ A Ho$ àíZ g§»`m 7 go 18 Ho$ àíZ VrZ-VrZ A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
50 eãXm| _| XoZo h¢ & 
(viii) ^mJ A Ho$ àíZ g§»`m 19 go 24 Ho$ àíZ nm±M-nm±M A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J 
70 eãXm| _| XoZo h¢ & 
(ix) ^mJ ~ Ho$ àíZ g§»`m 25 go 33 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV ~hþ{dH$ënr àíZ 
h¢ & àË`oH$ àíZ EH$ A§H$ H$m h¡ & {XE JE Mma {dH$ënm| _| go AmnH$mo Ho$db EH$ g~go 
Cn`wº$ {dH$ën MwZZm h¡ & 
(x) ^mJ ~ Ho$ àíZ g§»`m 34 go 36 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV Xmo-Xmo A§H$m| Ho$ 
àíZ h¢ & BZHo$ CÎma g§{jßV _| XoZo h¢ & 
General Instructions : 
(i) The question paper comprises two Sections, A and B. You are to attempt 
both the sections. 
(ii) All questions are compulsory. 
(iii) There is no choice in any of the questions.  
(iv) All questions of Section A and all questions of Section B are to be 
attempted separately. 
(v) Question numbers 1 to 3 in Section A are one-mark questions. These are to 
be answered in one word or in one sentence. 
(vi) Question numbers 4 to 6 in Section A are two-marks questions. These are 
to be answered in about 30 words each.  
(vii) Question numbers 7 to 18 in Section A are three-marks questions. These 
are to be answered in about 50 words each. 
31/1 3 P.T.O. 
(viii) Question numbers 19 to 24 in Section A are five-marks questions. These 
are to be answered in about 70 words each. 
(ix) Question numbers 25 to 33 in Section B are multiple choice questions 
based on practical skills.  Each question is a one-mark question. You are 
to select one most appropriate response out of the four provided to you. 
(x) Question numbers 34 to 36 in Section B are two-marks questions based on 
practical skills. These are to be answered in brief. 
 
 
^mJ A 
SECTION A 
 
1. Cg g_OmVr` loUr Ho$ {ÛVr` Am¡a V¥Vr` gXñ` H$m AmpÊdH$ gyÌ {b{IE {OgH$m àW_ 
gXñ` _oW¡Z h¡ & 1 
Write the molecular formula of the 2
nd
 and the 3
rd
 member of the 
homologous series whose first member is methane. 
2. O~ H$moB© H$mo{eH$m OZZ H$aVr h¡, V~ CgHo$ DNA H$m Š`m hmoVm h¡ ? 1 
When a cell reproduces, what happens to its DNA ? 
3. {ZåZ{b{IV ImÚ ûm¥§Ibm _|, eoa H$mo 100 J D$Om© CnbãY h¡ & CËnmXH$ ñVa na {H$VZr 
D$Om© CnbãY Wr ? 1 
 nmXn ? ? ? {haU ? ? ? eoa 
In the following food chain, 100 J of energy is available to the lion. How 
much energy was available to the producer ? 
 Plants ? ? ? Deer ? ? ? Lion 
4. H$moB© {~å~ 15 cm \$moH$g Xÿar Ho$ AdVb b|g go 30 cm Xÿar na pñWV h¡ & b|g Ûmam ~Zo 
à{V{~å~ Ho$ Mma A{^bjUm| (àH¥${V, pñW{V, Am{X) H$s gyMr ~ZmBE & 2 
An object is placed at a distance of 30 cm from a concave lens of focal 
length 15 cm. List four characteristics (nature, position, etc.) of the image 
formed by the lens. 
5. (i) dZm|, Ed§ (ii) dÝ`-OrdZ Ho$ g§ajU Ho$ Xmo bm^ {b{IE & 2 
State two advantages of conserving (i) forests, and (ii) wild-life. 
Page 4


31/1 1 P.T.O. 
narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð 
>na Adí` {bIo§ & 
Candidates must write the Code on the 
title page of the answer-book. 
 Series HRK 
 H$moS> Z§.  
   
 
 
Code No. 
amob Z§. 
Roll No. 
 
 
 
 
 
 
 
 
 
 
 
 
g§H${bV narjm – II 
SUMMATIVE ASSESSMENT – II 
{dkmZ 
SCIENCE 
{ZYm©[aV g_` : 3 KÊQ>o   A{YH$V_ A§H$ : 90 
Time allowed : 3 hours Maximum Marks : 90 
 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 16 h¢ & 
? àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na 
{bI| & 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >36 àíZ h¢ & 
? H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| & 
? Bg  àíZ-nÌ  H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ &  àíZ-nÌ H$m {dVaU 
nydm©• _| 10.15 ~Oo {H$`m OmEJm &  10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo 
n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & 
? Please check that this question paper contains 16 printed pages. 
? Code number given on the right hand side of the question paper should be 
written on the title page of the answer-book by the candidate. 
? Please check that this question paper contains 36 questions. 
? Please write down the Serial Number of the question before 
attempting it. 
? 15 minute time has been allotted to read this question paper. The question 
paper  will  be  distributed  at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the 
students will read the question paper only and will not write any answer 
on the answer-book during this period. 
31/1
 
SET-1 
31/1 2 
gm_mÝ` {ZX}e : 
(i) Bg àíZ-nÌ H$mo Xmo ^mJm|, ^mJ A Am¡a ^mJ ~, _| ~m±Q>m J`m h¡ & AmnH$mo XmoZm| ^mJm| Ho$ 
àíZm| Ho$ CÎma {bIZo h¢ & 
(ii) g^r  àíZ A{Zdm`© h¢ & 
(iii) nyao àíZ-nÌ _| {H$gr àíZ _| H$moB© M`Z àmßV Zht h¡ & 
(iv) AmnH$mo  ^mJ A Am¡a ^mJ ~  Ho$ g^r àíZm| Ho$ CÎma n¥WH²$-n¥WH²$ ^mJ Ho$ AmYma na 
{bIZo h¢ &  
(v) ^mJ A Ho$ àíZ g§»`m 1 go 3 Ho$ àíZ EH$-EH$ A§H$ Ho$ h¢ & BZHo$ CÎma EH$ eãX AWdm 
EH$ dmŠ` _| X| & 
(vi) ^mJ A Ho$ àíZ g§»`m 4 go 6 Ho$ àíZ Xmo-Xmo A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
30 eãXm| _| XoZo h¢ & 
(vii) ^mJ A Ho$ àíZ g§»`m 7 go 18 Ho$ àíZ VrZ-VrZ A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
50 eãXm| _| XoZo h¢ & 
(viii) ^mJ A Ho$ àíZ g§»`m 19 go 24 Ho$ àíZ nm±M-nm±M A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J 
70 eãXm| _| XoZo h¢ & 
(ix) ^mJ ~ Ho$ àíZ g§»`m 25 go 33 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV ~hþ{dH$ënr àíZ 
h¢ & àË`oH$ àíZ EH$ A§H$ H$m h¡ & {XE JE Mma {dH$ënm| _| go AmnH$mo Ho$db EH$ g~go 
Cn`wº$ {dH$ën MwZZm h¡ & 
(x) ^mJ ~ Ho$ àíZ g§»`m 34 go 36 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV Xmo-Xmo A§H$m| Ho$ 
àíZ h¢ & BZHo$ CÎma g§{jßV _| XoZo h¢ & 
General Instructions : 
(i) The question paper comprises two Sections, A and B. You are to attempt 
both the sections. 
(ii) All questions are compulsory. 
(iii) There is no choice in any of the questions.  
(iv) All questions of Section A and all questions of Section B are to be 
attempted separately. 
(v) Question numbers 1 to 3 in Section A are one-mark questions. These are to 
be answered in one word or in one sentence. 
(vi) Question numbers 4 to 6 in Section A are two-marks questions. These are 
to be answered in about 30 words each.  
(vii) Question numbers 7 to 18 in Section A are three-marks questions. These 
are to be answered in about 50 words each. 
31/1 3 P.T.O. 
(viii) Question numbers 19 to 24 in Section A are five-marks questions. These 
are to be answered in about 70 words each. 
(ix) Question numbers 25 to 33 in Section B are multiple choice questions 
based on practical skills.  Each question is a one-mark question. You are 
to select one most appropriate response out of the four provided to you. 
(x) Question numbers 34 to 36 in Section B are two-marks questions based on 
practical skills. These are to be answered in brief. 
 
 
^mJ A 
SECTION A 
 
1. Cg g_OmVr` loUr Ho$ {ÛVr` Am¡a V¥Vr` gXñ` H$m AmpÊdH$ gyÌ {b{IE {OgH$m àW_ 
gXñ` _oW¡Z h¡ & 1 
Write the molecular formula of the 2
nd
 and the 3
rd
 member of the 
homologous series whose first member is methane. 
2. O~ H$moB© H$mo{eH$m OZZ H$aVr h¡, V~ CgHo$ DNA H$m Š`m hmoVm h¡ ? 1 
When a cell reproduces, what happens to its DNA ? 
3. {ZåZ{b{IV ImÚ ûm¥§Ibm _|, eoa H$mo 100 J D$Om© CnbãY h¡ & CËnmXH$ ñVa na {H$VZr 
D$Om© CnbãY Wr ? 1 
 nmXn ? ? ? {haU ? ? ? eoa 
In the following food chain, 100 J of energy is available to the lion. How 
much energy was available to the producer ? 
 Plants ? ? ? Deer ? ? ? Lion 
4. H$moB© {~å~ 15 cm \$moH$g Xÿar Ho$ AdVb b|g go 30 cm Xÿar na pñWV h¡ & b|g Ûmam ~Zo 
à{V{~å~ Ho$ Mma A{^bjUm| (àH¥${V, pñW{V, Am{X) H$s gyMr ~ZmBE & 2 
An object is placed at a distance of 30 cm from a concave lens of focal 
length 15 cm. List four characteristics (nature, position, etc.) of the image 
formed by the lens. 
5. (i) dZm|, Ed§ (ii) dÝ`-OrdZ Ho$ g§ajU Ho$ Xmo bm^ {b{IE & 2 
State two advantages of conserving (i) forests, and (ii) wild-life. 
31/1 4 
6. gm_wXm{`H$ ñVa na Ob g§J«hU go g§~Õ Xmo à_wI bm^m| H$s ì`m»`m H$s{OE & 2 
Explain two main advantages associated with water harvesting at the 
community level. 
7. EWmZm°b H$m g§aMZm-gyÌ {b{IE & Š`m hmoVm h¡ O~ Bgo gm§Ð H
2
SO
4
 Ho$ Am{YŠ` _|  
443 K na J_© {H$`m OmVm h¡ ? A{^{H«$`m H$m g_rH$aU {b{IE VWm Bg A{^{H«$`m _| 
gm§Ð H
2
SO
4
 H$s ^y{_H$m H$m C„oI H$s{OE & 3 
Write the structural formula of ethanol. What happens when it is heated 
with excess of conc. H
2
SO
4
 at 443 K ? Write the chemical equation for the 
reaction stating the role of conc. H
2
SO
4
 in this reaction. 
8. àË`oH$ Ho$ {bE amgm`{ZH$ g_rH$aU H$s ghm`Vm go EñQ>arH$aU Am¡a gm~wZrH$aU 
A{^{H«$`mAm| Ho$ ~rM {d^oXZ H$s{OE & (i) EñQ>am|, Am¡a (ii) gm~wZrH$aU à{H«$`m H$m  
EH$-EH$ Cn`moJ {b{IE & 3 
Distinguish between esterification and saponification reactions with the 
help of the chemical equations for each. State one use of each (i) esters, 
and (ii) saponification process. 
9. AmYw{ZH$ AmdV© gmaUr _| AmdVm] Am¡a g_yhm| H$s g§»`m {b{IE & (i) {H$gr AmdV© _| ~mBª 
Amoa go XmBª Amoa OmZo na, VWm (ii) {H$gr g_yh _| D$na go ZrMo OmZo na VÎdm| Ho$ YmpËdH$ 
A{^bjUm| _| {H$g àH$ma n[adV©Z hmoVm h¡ ? AnZo CÎma H$s H$maU g{hV nwpîQ> H$s{OE & 3 
Write the number of periods and groups in the Modern Periodic Table. 
How does the metallic character of elements vary on moving (i) from left 
to right in a period, and (ii) down a group ? Give reason to justify your 
answer. 
10. Na, Mg Am¡a Al AmYw{ZH$ AmdV© gmaUr Ho$ Vrgao AmdV© Ho$ VÎd h¢ {OZH$s g_yh g§»`m 
H«$_e: 1, 2 Am¡a 13 h¡ & BZ_| go {H$g VÎd H$s (a) g§`moOH$Vm A{YH$V_, (b) na_mUw 
{ÌÁ`m A{YH$V_, VWm (c) amgm`{ZH$ A{^{H«$`merbVm A{YH$V_ h¡ ? àË`oH$ Ho$ {bE 
AnZo CÎma H$s H$maU g{hV nwpîQ> H$s{OE & 3 
Na, Mg and Al are the elements of the 3
rd
 period of the Modern Periodic 
Table having group number 1, 2 and 13 respectively. Which one of these 
elements has the (a) highest valency, (b) largest atomic radius,  
and (c) maximum chemical reactivity ? Justify your answer stating the 
reason for each. 
Page 5


31/1 1 P.T.O. 
narjmWu H$moS >H$mo CÎma-nwpñVH$m Ho$ _wI-n¥ð 
>na Adí` {bIo§ & 
Candidates must write the Code on the 
title page of the answer-book. 
 Series HRK 
 H$moS> Z§.  
   
 
 
Code No. 
amob Z§. 
Roll No. 
 
 
 
 
 
 
 
 
 
 
 
 
g§H${bV narjm – II 
SUMMATIVE ASSESSMENT – II 
{dkmZ 
SCIENCE 
{ZYm©[aV g_` : 3 KÊQ>o   A{YH$V_ A§H$ : 90 
Time allowed : 3 hours Maximum Marks : 90 
 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _o§ _w{ÐV n¥ð> 16 h¢ & 
? àíZ-nÌ _| Xm{hZo hmW H$s Amoa {XE JE H$moS >Zå~a H$mo N>mÌ CÎma-nwpñVH$m Ho$ _wI-n¥ð> na 
{bI| & 
? H¥$n`m Om±M H$a b| {H$ Bg àíZ-nÌ _| >36 àíZ h¢ & 
? H¥$n`m àíZ H$m CÎma {bIZm ewê$ H$aZo go nhbo, àíZ H$m H«$_m§H$ Adí` {bI| & 
? Bg  àíZ-nÌ  H$mo n‹T>Zo Ho$ {bE 15 {_ZQ >H$m g_` {X`m J`m h¡ &  àíZ-nÌ H$m {dVaU 
nydm©• _| 10.15 ~Oo {H$`m OmEJm &  10.15 ~Oo go 10.30 ~Oo VH$ N>mÌ Ho$db àíZ-nÌ H$mo 
n‹T>|Jo Am¡a Bg Ad{Y Ho$ Xm¡amZ do CÎma-nwpñVH$m na H$moB© CÎma Zht {bI|Jo & 
? Please check that this question paper contains 16 printed pages. 
? Code number given on the right hand side of the question paper should be 
written on the title page of the answer-book by the candidate. 
? Please check that this question paper contains 36 questions. 
? Please write down the Serial Number of the question before 
attempting it. 
? 15 minute time has been allotted to read this question paper. The question 
paper  will  be  distributed  at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the 
students will read the question paper only and will not write any answer 
on the answer-book during this period. 
31/1
 
SET-1 
31/1 2 
gm_mÝ` {ZX}e : 
(i) Bg àíZ-nÌ H$mo Xmo ^mJm|, ^mJ A Am¡a ^mJ ~, _| ~m±Q>m J`m h¡ & AmnH$mo XmoZm| ^mJm| Ho$ 
àíZm| Ho$ CÎma {bIZo h¢ & 
(ii) g^r  àíZ A{Zdm`© h¢ & 
(iii) nyao àíZ-nÌ _| {H$gr àíZ _| H$moB© M`Z àmßV Zht h¡ & 
(iv) AmnH$mo  ^mJ A Am¡a ^mJ ~  Ho$ g^r àíZm| Ho$ CÎma n¥WH²$-n¥WH²$ ^mJ Ho$ AmYma na 
{bIZo h¢ &  
(v) ^mJ A Ho$ àíZ g§»`m 1 go 3 Ho$ àíZ EH$-EH$ A§H$ Ho$ h¢ & BZHo$ CÎma EH$ eãX AWdm 
EH$ dmŠ` _| X| & 
(vi) ^mJ A Ho$ àíZ g§»`m 4 go 6 Ho$ àíZ Xmo-Xmo A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
30 eãXm| _| XoZo h¢ & 
(vii) ^mJ A Ho$ àíZ g§»`m 7 go 18 Ho$ àíZ VrZ-VrZ A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J  
50 eãXm| _| XoZo h¢ & 
(viii) ^mJ A Ho$ àíZ g§»`m 19 go 24 Ho$ àíZ nm±M-nm±M A§H$m| Ho$ h¢ & BZHo$ CÎma bJ^J 
70 eãXm| _| XoZo h¢ & 
(ix) ^mJ ~ Ho$ àíZ g§»`m 25 go 33 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV ~hþ{dH$ënr àíZ 
h¢ & àË`oH$ àíZ EH$ A§H$ H$m h¡ & {XE JE Mma {dH$ënm| _| go AmnH$mo Ho$db EH$ g~go 
Cn`wº$ {dH$ën MwZZm h¡ & 
(x) ^mJ ~ Ho$ àíZ g§»`m 34 go 36 Ho$ àíZ à`moJmË_H$ H$m¡eb na AmYm[aV Xmo-Xmo A§H$m| Ho$ 
àíZ h¢ & BZHo$ CÎma g§{jßV _| XoZo h¢ & 
General Instructions : 
(i) The question paper comprises two Sections, A and B. You are to attempt 
both the sections. 
(ii) All questions are compulsory. 
(iii) There is no choice in any of the questions.  
(iv) All questions of Section A and all questions of Section B are to be 
attempted separately. 
(v) Question numbers 1 to 3 in Section A are one-mark questions. These are to 
be answered in one word or in one sentence. 
(vi) Question numbers 4 to 6 in Section A are two-marks questions. These are 
to be answered in about 30 words each.  
(vii) Question numbers 7 to 18 in Section A are three-marks questions. These 
are to be answered in about 50 words each. 
31/1 3 P.T.O. 
(viii) Question numbers 19 to 24 in Section A are five-marks questions. These 
are to be answered in about 70 words each. 
(ix) Question numbers 25 to 33 in Section B are multiple choice questions 
based on practical skills.  Each question is a one-mark question. You are 
to select one most appropriate response out of the four provided to you. 
(x) Question numbers 34 to 36 in Section B are two-marks questions based on 
practical skills. These are to be answered in brief. 
 
 
^mJ A 
SECTION A 
 
1. Cg g_OmVr` loUr Ho$ {ÛVr` Am¡a V¥Vr` gXñ` H$m AmpÊdH$ gyÌ {b{IE {OgH$m àW_ 
gXñ` _oW¡Z h¡ & 1 
Write the molecular formula of the 2
nd
 and the 3
rd
 member of the 
homologous series whose first member is methane. 
2. O~ H$moB© H$mo{eH$m OZZ H$aVr h¡, V~ CgHo$ DNA H$m Š`m hmoVm h¡ ? 1 
When a cell reproduces, what happens to its DNA ? 
3. {ZåZ{b{IV ImÚ ûm¥§Ibm _|, eoa H$mo 100 J D$Om© CnbãY h¡ & CËnmXH$ ñVa na {H$VZr 
D$Om© CnbãY Wr ? 1 
 nmXn ? ? ? {haU ? ? ? eoa 
In the following food chain, 100 J of energy is available to the lion. How 
much energy was available to the producer ? 
 Plants ? ? ? Deer ? ? ? Lion 
4. H$moB© {~å~ 15 cm \$moH$g Xÿar Ho$ AdVb b|g go 30 cm Xÿar na pñWV h¡ & b|g Ûmam ~Zo 
à{V{~å~ Ho$ Mma A{^bjUm| (àH¥${V, pñW{V, Am{X) H$s gyMr ~ZmBE & 2 
An object is placed at a distance of 30 cm from a concave lens of focal 
length 15 cm. List four characteristics (nature, position, etc.) of the image 
formed by the lens. 
5. (i) dZm|, Ed§ (ii) dÝ`-OrdZ Ho$ g§ajU Ho$ Xmo bm^ {b{IE & 2 
State two advantages of conserving (i) forests, and (ii) wild-life. 
31/1 4 
6. gm_wXm{`H$ ñVa na Ob g§J«hU go g§~Õ Xmo à_wI bm^m| H$s ì`m»`m H$s{OE & 2 
Explain two main advantages associated with water harvesting at the 
community level. 
7. EWmZm°b H$m g§aMZm-gyÌ {b{IE & Š`m hmoVm h¡ O~ Bgo gm§Ð H
2
SO
4
 Ho$ Am{YŠ` _|  
443 K na J_© {H$`m OmVm h¡ ? A{^{H«$`m H$m g_rH$aU {b{IE VWm Bg A{^{H«$`m _| 
gm§Ð H
2
SO
4
 H$s ^y{_H$m H$m C„oI H$s{OE & 3 
Write the structural formula of ethanol. What happens when it is heated 
with excess of conc. H
2
SO
4
 at 443 K ? Write the chemical equation for the 
reaction stating the role of conc. H
2
SO
4
 in this reaction. 
8. àË`oH$ Ho$ {bE amgm`{ZH$ g_rH$aU H$s ghm`Vm go EñQ>arH$aU Am¡a gm~wZrH$aU 
A{^{H«$`mAm| Ho$ ~rM {d^oXZ H$s{OE & (i) EñQ>am|, Am¡a (ii) gm~wZrH$aU à{H«$`m H$m  
EH$-EH$ Cn`moJ {b{IE & 3 
Distinguish between esterification and saponification reactions with the 
help of the chemical equations for each. State one use of each (i) esters, 
and (ii) saponification process. 
9. AmYw{ZH$ AmdV© gmaUr _| AmdVm] Am¡a g_yhm| H$s g§»`m {b{IE & (i) {H$gr AmdV© _| ~mBª 
Amoa go XmBª Amoa OmZo na, VWm (ii) {H$gr g_yh _| D$na go ZrMo OmZo na VÎdm| Ho$ YmpËdH$ 
A{^bjUm| _| {H$g àH$ma n[adV©Z hmoVm h¡ ? AnZo CÎma H$s H$maU g{hV nwpîQ> H$s{OE & 3 
Write the number of periods and groups in the Modern Periodic Table. 
How does the metallic character of elements vary on moving (i) from left 
to right in a period, and (ii) down a group ? Give reason to justify your 
answer. 
10. Na, Mg Am¡a Al AmYw{ZH$ AmdV© gmaUr Ho$ Vrgao AmdV© Ho$ VÎd h¢ {OZH$s g_yh g§»`m 
H«$_e: 1, 2 Am¡a 13 h¡ & BZ_| go {H$g VÎd H$s (a) g§`moOH$Vm A{YH$V_, (b) na_mUw 
{ÌÁ`m A{YH$V_, VWm (c) amgm`{ZH$ A{^{H«$`merbVm A{YH$V_ h¡ ? àË`oH$ Ho$ {bE 
AnZo CÎma H$s H$maU g{hV nwpîQ> H$s{OE & 3 
Na, Mg and Al are the elements of the 3
rd
 period of the Modern Periodic 
Table having group number 1, 2 and 13 respectively. Which one of these 
elements has the (a) highest valency, (b) largest atomic radius,  
and (c) maximum chemical reactivity ? Justify your answer stating the 
reason for each. 
31/1 5 P.T.O. 
11. OZZ gOrdm| H$m EH$ AË`ÝV _hÎdnyU© bjU h¡ & Bg H$WZ Ho$ nj _| VrZ H$maU Xr{OE & 3 
Reproduction is one of the most important characteristics of living beings. 
Give three reasons in support of the statement.  
12. H$m{`H$ àdY©Z Š`m h¡ ? Bg {d{Y Ho$ Xmo bm^ Am¡a Xmo hm{Z`m± {b{IE &  3 
What is vegetative propagation ? State two advantages and two 
disadvantages of this method. 
13. J^©YmaU H$mo amoH$Zo Ho$ {bE {dH${gV H$s JB© VrZ VH$ZrH$m| H$s gyMr ~ZmBE & BZ_| go 
H$m¡Z-gr VH$ZrH$ nwéfm| Ho$ {bE Zht h¡ ? BZ VH$ZrH$m| H$m Cn`moJ {H$g àH$ma {H$gr n[adma 
Ho$ ñdmñÏ` Am¡a g_¥{Õ H$mo grYo à^m{dV H$aVm h¡ ?  3 
List three techniques that have been developed to prevent pregnancy. 
Which one of these techniques is not meant for males ? How does the use 
of these techniques have a direct impact on the health and prosperity of a 
family ?  
14. _§oS>b Zo `h {H$g àH$ma ñnîQ> {H$`m {H$ `h g§^d h¡ {H$ H$moB© bjU d§emZwJV hmo OmE 
naÝVw {H$gr Ord _| ì`ŠV Z hmo nmE ? 3  
How did Mendel explain that it is possible that a trait is inherited but not 
expressed in an organism ? 
15. ‘‘O¡d-{dH$mg VWm Ordm| H$m dJuH$aU nañna gå~pÝYV h¢ &’’  Bg H$WZ H$s H$maU g{hV 
nwpîQ> H$s{OE & 3  
‘‘Evolution and classification of organisms are interlinked.’’ Give reasons 
to justify this statement. 
16. `{X H$moB© b|g CgHo$ gm_Zo pñWV {H$gr {~å~ H$s {H$gr ^r pñW{V Ho$ {bE gX¡d hr grYm 
Am¡a N>moQ>m à{V{~å~ ~ZmVm h¡, Vmo Cg b|g H$s àH¥${V Š`m h¡ ? AnZo CÎma H$s nwpîQ> {H$aU 
AmaoI ItMH$a H$s{OE & `{X Bg b|g H$s j_Vm H$m g§»`mË_H$ _mZ 10 D h¡, Vmo H$mVu` 
àUmbr Ho$ AZwgma BgH$s \$moH$g Xÿar Š`m h¡ ? 3 
If the image formed by a lens for all positions of an object placed in front 
of it is always erect and diminished, what is the nature of this lens ? 
Draw a ray diagram to justify your answer. If the numerical value of the 
power of this lens is 10 D, what is its focal length in the Cartesian  
system ?