Transcript of 10th Sst Paper Solutions Set 1
#$
Who% among the following% was the hea& of the $evolutionary
'ociety forme& y )han !oi Chau? (A )rince Cuong "e (! )han !oi
Chau (C )han Chu *rinh (" +iang Qichao
Answer :
(A) Prince Cuon !e
Q, : -n which one of the following -n&ian .ational Congress
'essions was the &eman& of /)urna 'wara0/ formalise& in
"ecemer 1, ? (A 2a&ras 'ession (! +ahore 'ession (C Calcutta
'ession (" .agpur 'ession
Answer :
(B) "ahore Session
(A 'a&iya an& "huri (! Allahaa& an& al&ia (C
6&yogaman&al an& Champa77ara (" ottapuram an&
omman
Answer :
(B) Allaha#ad and $aldia
Q9 : Which one of the following political parties came to power in
!olivia in ,;? (A *he Communist )arty (! *he $epulican )arty (C *he
'ocialist )arty (" *he Conservative )arty
Answer :
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Q5 : Which one of the following is the most popular form of
government in the contemporary worl&? (A "ictatorship (!
2onarchy (C 2ilitary $ule (" "emocracy
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Q; : Which one of the following is a /.ational )olitical )arty/? (A
'ama0wa&i )arty (! $ashtriya <anata "al (C $ashtriya +o7 "al
(" !ahu0an 'ama0 )arty
Answer :
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Q= : Which one of the following &ays is eing oserve& as
/.ational Consumer>s "ay/ in -n&ia?
(A ,9 "ecemer (! ,5 "ecemer (C 1 "ecemer (" 31 "ecemer
Answer :
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Q8 : Which one of the following laws was enacte& y the
overnment of -n&ia in #ctoer ,5? (A *he $ight to )roperty Act
(! *he $ight to E&ucation Act (C *he Consumer )rotection Act ("
*he $ight to -nformation Act
Answer :
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Q : Which one of the following refers to investment? (A *he money
spent on religious ceremonies (! *he money spent on social customs
(C *he money spent to uy assets such as lan& (" *he money spent
on househol& goo&s
Answer :
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ow &i& stu&ents in ietnam Bght against the colonial
government>s eorts to prevent ietnamese from Dualifying for
>white collar 0os>? E@plain4
Answer :
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Q11 : Why &i& an&hi0i &eci&e to launch a
nationwi&e Satyagraha against the propose& $owlatt
Act% 11? E@plain4
Answer :
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Q1, : "escrie the main features of the >'alt 2arch>4
Answer :
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Q13 : What are the two main ways of generating electricity? ow are
they &ierent from each other? E@plain4
Answer :
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Q19 : .ame the nonmetallic mineral which can e split easily into
thin sheets4 2ention its uses4
Answer :
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Q15 : Why are eFcient means of transport prereDuisites for the fast
&evelopment of the country? E@plain4
Answer :
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Q1; : .ame the si@ >.ational )olitical )arties> in -n&ia
in a chronological or&er4
Answer :
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What inspiration &o we get from !olivia>s popular struggle?
E@plain any three values that we can learn from it4
Answer :
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Q18 : ow is &emocratic government 7nown as responsive
government? E@plain with e@amples4
Answer :
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Q1 : ow have mar7ets een transforme& in recent years? E@plain
with e@amples4
Answer :
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Q, : E@plain any three factors which gave irth to the >Consumer
2ovement> in -n&ia4
Answer :
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Q,1 : E@plain with an e@ample% how cre&it plays a vital an&
positive role for &evelopment4
Answer :
#$
E@plain% with e@amples% how religious groups playe& an
important role in the &evelopment of anticolonial feelings in
ietnam4
Answer :
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Q,3 : ow &i& &ierent social groups conceive the
i&ea of >.on Cooperation>? E@plain with e@amples4
Answer :
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Q,9 : Why is there a pressing nee& for using renewale energy
sources in -n&ia? E@plain any Bve reasons4
Answer :
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Q,5 : /A&vancement of international tra&e of a country is
an in&e@ to its prosperity4/ 'upport the statement with suitale
e@amples4
Answer :
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Q,; : /Aout hun&re& years ago there were few countries that
ha& har&ly any political party4 .ow there are few countries
that &o not have political parties4/ E@amine the
statement4
Answer :
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Q,= : Compare the popular struggles of .epal an& !olivia4
Answer :
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Q,8 : /loalisation has een a&vantageous to consumers as well as
to pro&ucers4/ 'upport the statement with suitale
e@amples4
Answer :
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Q, : Why are rules an& regulations reDuire& in the
mar7etplace? E@plain4
Answer :
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Q3 : (341 *wo features A an& ! are mar7e& in the political
outline map of -n&ia4 -&entify these features with the help
of the following information an& write their correct names on
the lines mar7e& in the map : A4 *he place where the -n&ian
.ational Congress 'ession was hel& in 1,=4 !4 *he place which
is associate& with the movement of -n&igo )lanters4
(34, #n the same political outline map of -n&ia% locate an&
lael the following with appropriate symols : (i .arora a nuclear
power plant (ii $our7ela an iron an& steel plant (iii an&la
a ma0or sea port4
Answer :
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10th Sst Paper Solutions Set 1 : CBSE !elhi Previous Year 2014
General Instructions : (i) The question paper has 30 questions
in all. All questions are compulsory. (ii) Marks for each question
are indicated against the question. (iii) Questions from serial
number 1 to 9 are Multiple Choice Questions. Each
question carries 1 mark. (i) Questions from serial number
10 to 21 are 3 marks questions. Ans!ers of these
questions should not e"ceed 80 !ords each. () Questions from
serial number 22 to 29 are 5 marks questions.
Ans!ers of these questions should not e"ceed 120 !ord each.
(i) Question number 30 is a map question of 5 marks
( 2 marks from #istory and 3 marks from $eography).
(ii) Attach the %lled up map inside your
ans!er&book.
Q1 : Which among the following was the main reason for the weavers
to revolt against contractors in 'ilesia% in 1895?
#$
Which among the following was the main reason to start the
>*on7in Gree 'chool> in ietnam?
(A *o provi&e >Western 'tyle E&ucation> (! *o
provi&e >2o&ern E&ucation> (C *o provi&e
>'cience E&ucation> (" *o popularise the >Grench
+anguage>
Answer :
or
(A) ,o provide -.estern St*le Education-
Q, : -n which one of the following places 2ahatma an&hi
organise& 'atyagraha for the Brst time in -n&ia?
(A "an&i (! Ahme&aa& (C he&a (" Champaran
Answer :
(!) Cha+paran
Q3 : Which one of the following has een the ma0or source of foreign
e@change for -* in&ustry?
(A !harat eavy Electricals +imite& (! #il -n&ia +imite&
(C 'teel Authority of -n&ia +imite& (" !usiness )rocess
#utsourcing
Answer :
Which one of the following statements is correct regar&ing
>sectional interest groups>? (A *hey promote collective
rather than selective goo&4 (! *heir principal concern is
etterment an& well eing of their memers% not society in
general4 (C *hey aim to help groups other than their own memers4 ("
*hey &o not see7 to promote the interest of a particular
section or group of society4
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Q5 : Which one of the following facilities is oere& y the
>Election Commission> to a recognise& political
party?
(A )arty name (! Election Gun&s (C Election symol ("
2anifesto
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Q; : Which one of the following is an e@ample of outcomes of a
&emocracy that pro&uces an accountale government? (A #pen
to pulic &eates on ma0or policies an& legislation (! #pen
in promoting economic &evelopment (C #pen in re&ucing
economic ineDualities (" #pen to rulers electe& y the
people
Answer :
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Q= : Which one of the following is a formal source of cre&it?
(A *ra&ers (! Cooperative societies (C 2oneylen&ers ("
Grien&s an& relatives
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Q8 : Which one of the following is the appropriate meaning of
collateral? (A -t is the sum total of money orrowe& from an7s
(! *he amount orrowe& from frien&s (C -t is an asset of the
orrower use& as guarantee to a len&er (" *he amount
investe& in a usiness
Answer :
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Q : Which one of the following organisations lays stress on
lieralisation of foreign tra&e an& foreign investment? (A
-nternational 2onetary Gun& (! -nternational +aour #rganisation
(C Worl& ealth #rganisation (" Worl& *ra&e
#rganisation
Answer :
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#$
Why &i& a ma0or protest erupt in 1,; in the 'aigon .ative
irls 'chool in ietnam? E@plain4
Answer :
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Q11 : E@plain the i&ea of 'atyagraha accor&ing to
an&hi0i4
Answer :
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Q1, : "escrie any three suppressive measures ta7en y the !ritish
a&ministration to clamp&own on nationalists4
Answer :
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Q13 : Why is energy reDuire& for all activities? ow can energy
e generate&? E@plain
Answer :
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Q19 : ow &o means of transport an& communication play an
important role in the economic &evelopment of the country?
E@plain4
Answer :
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Q15 : >Environmental &egra&ation has een seen
everywhere4> E@plain any three values that can help to prevent
environment &egra&ation4
Answer :
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Q1; : Why &o we nee& political parties? E@plain4
Answer :
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Q1= : ow are popular struggles integral to the wor7ing
&emocracy? E@plain with an e@ample of !olivia>s struggle
against privatisation of water4
Answer :
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Q18 : ow is &emocratic government 7nown as responsive
government? E@plain with an e@ample4
Answer :
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Q1 : ow &oes money solve the prolem of &oule
coinci&ence of wants? E@plain with an e@ample4
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Q, : ow has information an& communication technology
stimulate& the gloalisation process? E@plain with
e@amples4
Answer :
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Q,1 : ow has a threetier Duasi0u&icial machinery een set up for
re&ressal of consumer &isputes? E@plain4
Answer :
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/*he measures ta7en y the Grench to control the sprea& of uonic
plague in anoi create& a serious prolem4/ E@plain the
statement4
Answer :
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Q,3 : ow coul& noncooperation ecome a movement? E@plain with
e@amples4
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Q,9 : Why is conservation of minerals essential? E@plain any four
measures to conserve minerals4
Answer :
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Q,5 : />Agriculture> an& >in&ustry> are
complementary to each other4/ E@plain with Bve e@amples4
Answer :
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Q,; : ow has the struggle of the .epali people ecome a source of
inspiration to &emocrats all over the worl&? E@plain4
Answer :
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Q,= : Why cannot mo&ern &emocracies e@ist without political
parties? E@plain4
Answer :
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Q,8 : E@plain the role of multinational corporations in the
gloalisation process4
Answer :
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Q, : ow &oes e@ploitation of consumers ta7e place in the
mar7et? E@plain with any Bve facts4
Answer :
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Q3 : (341 *wo features A an& ! are mar7e& in the political
outline map of -n&ia4 -&entify these features with the help
of the following information an& write their correct names on
the lines mar7e& in the map: (A *he place where the -n&ian
.ational Congress 'ession was hel& in 'eptemer 1, (! *he place
where the cotton mill wor7ers 'atyagraha was organise& in
118
(34, #n the same political outline map of -n&ia% locate an&
lael the following with appropriate symols: (i !hilai iron an&
steel plant (ii Coimatore cotton te@tile centre (iii $a0a 'ansi
international airport
Answer :
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10th Sst Paper Solutions Set 1 : CBSE All India Previous Year 2014
Q1 : What type of conservative regimes were set up in 1815 in
Europe? Choose the appropriate answer for the following : (A
Autocratic (! "emocratic (C Aristocratic
#$
Who% among the following% was the hea& of the $evolutionary
'ociety forme& y )han !oi Chau? (A )rince Cuong "e (! )han !oi
Chau (C )han Chu *rinh (" +iang Qichao
Answer :
(A) Prince Cuon !e
Q, : -n which one of the following -n&ian .ational Congress
'essions was the &eman& of /)urna 'wara0/ formalise& in
"ecemer 1, ? (A 2a&ras 'ession (! +ahore 'ession (C Calcutta
'ession (" .agpur 'ession
Answer :
(B) "ahore Session
Q3 : .ational Waterway .o4 1 is navigale etween which of the
following places? (A 'a&iya an& "huri (! Allahaa&
an& al&ia (C 6&yogaman&al an& Champa77ara ("
ottapuram an& omman
Answer :
(B) Allaha#ad and $aldia
(! *he $epulican )arty (C *he 'ocialist )arty (" *he Conservative
)arty
Answer :
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Q5 : Which one of the following is the most popular form of
government in the contemporary worl&? (A "ictatorship (!
2onarchy (C 2ilitary $ule (" "emocracy
Answer :
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Q; : Which one of the following is a /.ational )olitical )arty/? (A
'ama0wa&i )arty (! $ashtriya <anata "al (C $ashtriya +o7 "al
(" !ahu0an 'ama0 )arty
Answer :
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Q= : Which one of the following &ays is eing oserve& as
/.ational Consumer>s "ay/ in -n&ia? (A ,9 "ecemer (! ,5
"ecemer (C 1 "ecemer (" 31 "ecemer
Answer :
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Q8 : Which one of the following laws was enacte& y the
overnment of -n&ia in #ctoer ,5? (A *he $ight to )roperty
Act
(! *he $ight to E&ucation Act (C *he Consumer )rotection Act ("
*he $ight to -nformation Act
Answer :
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Q : Which one of the following refers to investment? (A *he money
spent on religious ceremonies (! *he money spent on social customs
(C *he money spent to uy assets such as lan& (" *he money spent
on househol& goo&s
Answer :
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#$
ow &i& stu&ents in ietnam Bght against the colonial
government>s eorts to prevent ietnamese from Dualifying for
>white collar 0os>? E@plain4
Answer :
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Q11 : Why &i& an&hi0i &eci&e to launch a
nationwi&e Satyagraha against the propose& $owlatt
Act% 11? E@plain4
Answer :
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Q1, : "escrie the main features of the >'alt 2arch>4
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Q13 : What are the two main ways of generating electricity? ow are
they &ierent from each other? E@plain4
Answer :
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Q19 : .ame the nonmetallic mineral which can e split easily into
thin sheets4 2ention its uses4
Answer :
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Q15 : Why are eFcient means of transport prereDuisites for the fast
&evelopment of the country? E@plain4
Answer :
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Q1; : .ame the si@ >.ational )olitical )arties> in -n&ia
in a chronological or&er4
Answer :
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Sinup"oin
Q1= : What inspiration &o we get from !olivia>s popular
struggle? E@plain any three values that we can learn from it4
Answer :
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Sinup"oin
Q18 : ow is &emocratic government 7nown as responsive
government? E@plain with e@amples4
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Q1 : ow have mar7ets een transforme& in recent years? E@plain
with e@amples4
Answer :
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Q, : E@plain any three factors which gave irth to the >Consumer
2ovement> in -n&ia4
Answer :
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Q,1 : E@plain with an e@ample% how cre&it plays a vital an&
positive role for &evelopment4
Answer :
#$
E@plain% with e@amples% how religious groups playe& an
important role in the &evelopment of anticolonial feelings in
ietnam4
Answer :
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Q,3 : ow &i& &ierent social groups conceive the
i&ea of >.on Cooperation>? E@plain with e@amples4
Answer :
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Why is there a pressing nee& for using renewale energy sources
in -n&ia? E@plain any Bve reasons4
Answer :
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Q,5 : /A&vancement of international tra&e of a country is
an in&e@ to its prosperity4/ 'upport the statement with suitale
e@amples4
Answer :
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Q,; : /Aout hun&re& years ago there were few countries that
ha& har&ly any political party4 .ow there are few countries
that &o not have political parties4/ E@amine the
statement4
Answer :
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Q,= : Compare the popular struggles of .epal an& !olivia4
Answer :
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Q,8 : /loalisation has een a&vantageous to consumers as well as
to pro&ucers4/ 'upport the statement with suitale
e@amples4
Answer :
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Q, : Why are rules an& regulations reDuire& in the
mar7etplace? E@plain4
Answer :
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(341 *wo features A an& ! are mar7e& in the political
outline map of -n&ia4 -&entify these features with the help
of the following information an& write their correct names on
the lines mar7e& in the map : A4 *he place where the -n&ian
.ational Congress 'ession was hel& in 1,=4 !4 *he place which
is associate& with the movement of -n&igo )lanters4
(34, #n the same political outline map of -n&ia% locate an&
lael the following with appropriate symols : (i .arora a nuclear
power plant (ii $our7ela an iron an& steel plant (iii an&la
a ma0or sea port4
Answer :
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10th Science Paper Solutions Set 1 : CBSE All India Previous Year
2014
eneral -nstructions: (i) ,he uestion paper co+prises o& to
Sections A and B3 You are to atte+pt #oth the sections3 (ii) All
uestions are co+pulsor*3 (iii) All uestion o& SectionA and all
uestions o& SectionB are to #e atte+pted separatel*3 (iv)
'uestion nu+#ers 1 to in SectionA are one +ar5 uestions3 ,hese are
to #e ansered in one ord or in one sentence3 (v) 'uestion nu+#ers 4
to 6 in SectionsA are to +ar5s uestions3 ,hese are to #e ansered in
a#out 0 ords each3 (vi) 'uestion nu+#er 7 to 18 in SectionA are
three +ar5s uestions3 ,hese are to #e ansered in a#out 90 ords
each3 (vii) 'uestion nu+#ers 20 to 24 in SectionA are ve +ar5s
uestions3 ,hese are to #e ansered in a#out 60 ords each3 (viii)
'uestion nu+#ers 29 to 42 in SectionB are +ultiple choice uestions
#ased on practical s5ills3 Each uestion is a one +ar5 uestion3 You
are to select one +ost appropriate response out o& the &our
provided to *ou3
Q1 : +ist any two properties of the elements elonging to the Brst
group of the mo&ern perio&ic tale4
Answer :
13 ,hese ele+ents e<hi#it =1 valenc*3 23 ,hese are ver* reactive
that do not &ound &reel* in nature3
Q, : What is a gene?
Answer :
%ene is a part o& !>A that encodes the instructions that
allo a cell to produce a specic protein or en?*+e3
Q3 : ive one e@ample each from your &aily life where the
&omestic waste can e eectively reuse& an&
recycle&4
Answer :
@euse: .e can reuse the e+pt* #ottles o& a+ pic5les etc &or
the storae purposes3 @ec*cle: .e can rec*cle old nespapers
alu+iniu+ cans etc3
Q9 : What is the main &ierence etween sperms an& eggs of
humans? Write the importance of this &ierence4
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Q5 : +ist two possile ways in which a concave mirror can
pro&uce a magniBe& image of an o0ect place& in front of
it4 'tate the &ierence% if any% etween these two images4
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Q; : What are &ecomposers? +ist two important roles they play
in the environment4
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Q= : Why is sustainale management of natural resources necessary?
#ut of the two metho&s reuse an& recycle which one
woul& you suggest to practise an& why?
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Q8 : What are homologous series of caron compoun&s? Write the
molecular formula of two consecutive memers of homologous series of
al&ehy&es4 'tate which part of these compoun&s
&etermines their (i physical an& (ii chemical
properties4
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Q : A caro@ylic aci& (molecular formula C,9#, reacts with an
alcohol in the presence of an aci& catalyst to form a
compoun& >H>4 *he alcohol on o@i&ation with al7aline
2n#9 followe& y aci&iBcation gives the same caro@ylic
aci& C,9#,4 Write the name an& structure of (i caro@ylic
aci&% (ii alcohol an& (iii the compoun&
>H>4
Answer :
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Q1 : *he electrons in the atoms of four elements A% !% C an& "
are &istriute& in three shells having 1% 3% 5 an& =
electrons in the outermost shell respectively4 'tate the perio&
in which these elements can e place& in the mo&ern
perio&ic tale4 Write the electronic conBguration of the atoms
of A an& " an& the molecular formula of the compoun&
forme& when A an& " comine4
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Q11 : 'tu&y the following tale in which positions of si@
elements A% !% C% "% E an& G are shown as they are in the
mo&ern perio&ic tale:
#n the asis of the aove tale% answer the following Duestions: (i
.ame the element which forms only covalent compoun&s4 (ii .ame
the element which is a metal with valency three4 (iii .ame the
element which is a nonmetal with valency three4 (iv #ut of "
an& E% which is igger is siIe an& why? (v Write the common
name for the family to which the elements C an& G elong4
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Q1, : E@plain the process of regeneration in Planaria4 ow is this
process &ierent from repro&uction?
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Q13 : What is placenta? 'tate its function in human female4
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Q19 : With the help of suitale e@amples% e@plain why certain traits
cannot e passe& on to the ne@t generation4 What are such traits
calle&?
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Q15 : /A trait may e inherite&% ut may not e e@presse&4/
<ustify this statement with the help of a suitale e@ample4
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Q1; : A stu&ent wants to pro0ect the image of a can&le Jame
on a screen ; cm in front of a mirror y 7eeping the Jame at a
&istance of 15 cm from its pole4 (a Write the type of mirror he
shoul& use4 ( Gin& the linear magniBcation of the image
pro&uce&4
(c What is the &istance etween the o0ect an& its image?
(& "raw a ray &iagram to show the image formation in this
case4
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Q1= : "raw a ray &iagram to show that path of the refracte&
ray in each of the following cases : A ray of light
inci&ent on a concave lens is (i passing through its optical
centre4 (ii parallel to its principal a@is4 (iii &irecte&
towar&s its principal focus4
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Q18 : A narrow eam )Q of white light is passing through a glass
prism A!C as shown in the &iagram4
*race it on your answer sheet an& show the path of the emergent
eam as oserve& on the screen "E4 (i Write the name an&
cause of the phenomenon oserve&4 (ii Where else in nature is
this phenomenon oserve& ? (iii !ase& on this oservation%
state the conclusion which can e &rawn aout the constituents of
white light4
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Q1 : /Energy Jow in a foo& chain is uni&irectional4/
<ustify this statement4 E@plain how the pestici&es enter a
foo& chain an& suseDuently get into our o&y4
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Q, : Elements forming ionic compoun&s attain nole gas
conBguration y either gaining or losing electrons from their
outermost shells4 ive reason to e@plain why caron cannot attain
nole gas conBguration in this manner to form its compoun&s4
.ame the type of on&s forme& in ionic compoun&s an&
in the compoun&s forme& y caron4 Also give reason why caron
compoun&s are generally poor con&uctors of
electricity4
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Q,1 : (a "raw a sectional view of human female repro&uctive
system an& lael the part where (i eggs &evelop4 (ii
fertilisation ta7e place4 (iii fertilise& egg gets
implante&4 ( "escrie% in rief% the changes the uterus
un&ergoes4 (i to receive the Iygote4 (ii if Iygote is not
forme&4
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Q,, : (a .ame the parts laelle& as A% !% C an& " in the
&iagram given elow:
( What is pollination? 'tate its signiBcance4 (c ow &oes
fertilisation occur in Jowers? .ame the parts of the Jower that
&evelop into (i see&% an& (ii fruit after
fertilisation4
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Q,3 : (a E@plain the following terms relate& to spherical
lenses : (i optical centre (ii centres of curvature (iii principal
a@is (iv aperture (v principal focus (vi focal length ( A
converging lens has focal length of 1, cm4 Calculate at what
&istance shoul& the o0ect e place& from the lens so
that it forms an image at 98 cm on the other si&e of the
lens4
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Q,9 : (a +ist the parts of the human eye that control the amount of
light entering into it4 E@plain how they perform this function4 (
Write the function of retina in human eye4 (c "o you 7now that the
cornealimpairment can e cure& y replacing the &efective
cornea with the cornea of the &onate& eye? ow an& why
shoul& we organise groups to motivate the community memers to
&onate their eyes after &eath?
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Q,5 : -n an e@periment to stu&y the properties of ethanoic
aci&% a stu&ent ta7es aout 3 m+ of ethanoic aci& in a
&ry test tue4 e a&&s an eDual amount of
&istille& water to it an& sha7es the test tue well4
After some time he is li7ely to oserve that (A a colloi& is
forme& in the test tue4 (! the ethanoic aci& &issolves
rea&ily in water4 (C the solution ecomes light orange4 (" water
Joats over the surface of ethanoic aci&4
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Q,; : A stu&ent ta7es aout , m+ ethanoic aci& in a &ry
test tue an& a&&s a pinch of so&ium hy&rogen
caronate to it4 e reports the following oservations:
-4 -mme&iately a colourless an& o&ourless gas evolves
with a ris7 eervescence4 --4 *he gas turns lime water mil7y when
passe& through it4 ---4 *he gas urns with an e@plosion when a
urning splinter is rought near it4 -4 *he gas e@tinguishes the
urning splinter that is rought near it4 *he correct oservations are
(A -% -- an& --- (! --% --- an& - (C ---% - an& - (" -%
-- an& -
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Q,= : We nee& ,K aDueous solution of so&ium
hy&ro@i&e for the stu&y of saponiBcation
reaction4 When we open the li& of the ottle containing
soli& so&ium hy&ro@i&e we oserve it in which form?
(A Colourless transparent ea&s (! 'mall white ea&s (C White
pelletsLJa7es (" Gine white pow&er
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Q,8 : While stu&ying saponiBcation reaction% a stu&ent
measures the temperature of the reaction mi@ture an& also
Bn&s its nature using lueLre& litmus paper4 #n the asis of
his oservations the correct conclusion woul& e (A the reaction
is e@othermic an& the reaction mi@ture is aci&ic4 (! the
reaction is en&othermic an& the reaction mi@ture is
aci&ic4 (C the reaction is en&othermic an& the reaction
mi@ture is asic4 (" the reaction is e@othermic an& the reaction
mi@ture is asic4
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Q, : -n a locality% har& water% reDuire& for an e@periment%
is not availale4 owever% the following salts are availale in the
school laoratory: 14 'o&ium sulphate ,4 Calcium sulphate
34 2agnesium chlori&e 94 'o&ium chlori&e 54 Calcium
chlori&e ;4 )otassium sulphate Which of the aove salts may e
&issolve& in water to otain har& water for the
e@periment? (A ,% 3 an& 5 (! 1% , an& 5 (C 1% ,% 9 an&
; (" 3 an& 5 only
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Q3 : A stu&ent has otaine& an image of a
wellilluminate& &istant o0ect on a screen to &etermine
the focal length% G1 of the given spherical mirror4 *he
teacher then gave him another mirror of focal length% G,
an& as7e& him to otain a focusse& image of the same
o0ect on the same screen4 *he stu&ent foun& that in
or&er to focus the same o0ect using the secon& mirror% he
has to move the mirror away from the screen4 Grom this oservation
it may e conclu&e& that oth the spherical mirrors given to
the stu&ent were (select the correct option (A Concave an&
G1 M G,
(! Concave an& G1 N G,
(C Conve@ an& G1 M G,
(" Conve@ an& G1 N G,
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Q31 : A stu&ent focusse& the 'un rays using an optical
&evice >H> on a screen ' as shown4
Grom this it may e conclu&e& that &evice >H> is a
(select the correct option
(A Conve@ lens of focal length 1 cm4 (! Conve@ lens of ra&ius
of curvature , cm4 (C Conve@ lens of focal length , cm4 (" Concave
mirror of focal length , cm4
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Q3, : After tracing the path of a ray of light passing through a
rectangular glass sla for four &ierent values of the angle of
inci&ence% a stu&ent reporte& his oservations in taular
form as given elow:
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Q33 : A stu&ent traces the path of a ray of light passing
through a rectangular glass sla an& mar7s the angle of
inci&ence i% angle of refraction r an& angle of emergence
e% as shown4
*he correctly mar7e& angle(s isLare (A Oi only (! Oe only (C Or
only (" Oi an& Oe
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Q39 : 'tu&y the following &iagrams in which the path of a
ray of light passing through a glass prism as trace& y four
stu&ents )% Q% $ an& ' is shown:
*he stu&ent who has trace& the path correctly is (A ) (! Q
(C $ (" '
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Q35 : -n the following &iagram% the path of a ray of light
passing through a glass prism is shown:
-n this &iagram the angle of inci&ence% the angle of
emergence an& the angle of &eviation respectively are
(select the correct option: (A H% $ an& * (! P% Q an& * (C
H% Q an& ) (" P% Q an& )
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Q3; : A stu&ent is using a conve@ lens of focal length 1 cm to
stu&y the image formation y a conve@ lens for the various
positions of the o0ect4 -n one of his oservations% he may oserve
that when the o0ect is place& at a &istance of , cm from
the lens% its image is forme& at (select the correct option (A
, cm on the other si&e of the lens an& is of the same siIe%
real an& erect4 (! 9 cm on the other si&e of the lens
an& is magniBe&% real an& inverte&4 (C , cm on the
other si&e of the lens an& is of the same siIe% real
an& inverte&4 (" , cm on the other si&e of the lens
an& is of the same siIe% virtual an& erect4
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Q3= : A stu&ent is using a conve@ lens of focal length 18 cm to
stu&y the image formation y it for the various positions of the
o0ect4 e oserves that when he places the o0ect at ,= cm% the
location of the image is at 59 cm on the other si&e of the
lens4 -&entify from the following &iagram the three rays
that oeying the laws of refraction an& may e use& to
&raw the correspon&ing ray &iagram4
(A 1% , an& 9 (! 1% 3 an& 5 (C ,% 9 an& 5 (" ,% 3
an& 9
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Q38 : A stu&ent has to focus his compoun& microscope to
oserve a prepare& sli&e showing &ierent stages of inary
Bssion in Amoeba4 *he steps he is li7ely to follow are
liste& elow in a haphaIar& manner:
-4 A&0ust the &iaphragm an& the mirror of the
microscope so that suFcient light may enter to illuminate the
sli&e4 --4 Gi@ the sli&e on the stage carefully4 ---4
A&0ust the microscope to high power an& focus4 -4
A&0ust the microscope to low power an& focus4 *he correct
seDuence of the aove steps to oserve the sli&e un&er the
microscope is (A -% --%-% --- (! --% -% -% --- (C --% -% -% --- ("
-% -% --% ---
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Q3 : When you stu&y a sli&e showing &ierent stages of
u&&ing in yeast% you oserve the following stages: -4 *he
u& may get separate& from the parent o&y an&
&evelop into a new in&ivi&ual4 --4 *he o&y of the
u& &evelops an& gives rise to another ay u&4 ---4 A
u& comes out in any &irection from the o&y of the
parent cell4 -4 *hus they may form a colony4 *he proper seDuence of
the aove stages is (A --% -% ---% - (! --% ---% -% - (C ---% --% -%
- (" ---% -% --% -
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Q9 : 'tu&y the following statements : -4 Wings of ir&s
an& wings of ats are homologous organs4 --4 Wings of ir&s
an& wings of insects are mo&iBe& forelims4 ---4 Wings
of ir&s an& wings of insects are analogous organs4 -4 Wings
of ir&s an& forelims of horse an& homologous organs4
*he correct statements are (A - an& -- (! -- an& --- (C ---
an& - (" - an& -
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Q91 : Which of the following pairs of two vegetales represents the
correct homologous structures? (A 'weet potato an& potato (!
'weet potato an& tomato (C Carrot an& potato (" $a&ish
an& carrot
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Q9, : -n the following &iagram showing the structure of emryo
of a &icot see&% what are the parts mar7e& -% --
an& --- seDuentially?
(A )lumule% Cotyle&on% $a&icle (! )lumule% $a&icle%
Cotyle&on (C Cotyle&on% )lumule% $a&icle ("
$a&icle% )lumule% Cotyle&on
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