UP Board Class 12th Model Paper 2025 Logic

उत्तर प्रदेश माध्यमिक शिक्षा परिषद्

MODEL
PAPER
2025

ekWMy isij l=& 2024&2025
rdZ”kkL=
d{kk&12
le;%&3 ?k.Vk 15 feuV iw.kkZd
a &100
uksV& lHkh iz”u vfuok;Z gSaA

1- D;k vkids fopkj esa rdZ”kkL= dk v/;;u mi;ksxh gS] tcfd os yksx Hkh ftUgksusa
dHkh bl fo’k; dk v/;;u ugha fd;k] “kq)rkiwoZd rdZ dj ysrs gSa\ dkj.k lfgr
le>kb;sA
Do you consider that study of logic is useful when people can
reason without the study of logic? Give the reason. 10
fuEufyf[kr esa izR;sd rdZokD;ksa ds xq.k vkSj ifjek.k crk,¡& 3+3+4=10
(i) dqN ewfrZdkj fp=dkj gSaA
(ii) dksbZ Qsjhokyk djksMi+ fr ugha gSA
(iii) lHkh O;kikjh lV~Vsckt gSAa
Name the quality and quantity of each of the following propositions-
(i) Some sculptors are painters.
(ii) No peddlers are millionaires.
(iii) All merchants are speculators.
2- ijEijkxr fojks/k oxZ dk mnkgj.k lfgr O;k[;k djsAa 10
Explain the traditional square of opposition with examples.
;fn lHkh lektoknh “kkafrfiz; gS]a lR; gS]a rks v/kksfyf[kr rdZokD;ksa ds lR;rk ;k
vlR;rk ds ckjs esa D;k vuqeku yxk;k tk ldrk gS\ 3+3+4=10
(i) dqN v”kkafrfiz; vlektoknh ugha gSaA
(ii) dksbZ lektoknh v”kkafrfiz; ugha gSA
(iii) lHkh vlektoknh v”kkafrfiz; gSAa
If “All socialist are pacifists” is true, What may be inferred about the truth
or falsehood of the following proposition?
(i) Some nonpacifists are nonsocialists.
(ii) No socialists are nonpacifists.
(iii) All nonsocialists are nonpacifists.

3- fujis{k U;k;okD; D;k gS\ blesa fdrus in gksrs gSa\ mldh voLFkk ,oa vkd`fr dks
mnkgj.k lfgr Li’V djsAa 3+3+4=10
What is the categorical proposition? How many terms in it? Clear
its moods and figures with examples.
fuEufyf[kr esa ls izR;sd U;k;okD; dks ekud vkdkj esa fy[ksa vkSj bldh voLFkk
,oa vkd`fr dk mYys[k djs& a 3+3+4=10
(i) dqN lnkcgkj inkFkZ iwtk ds inkFkZ gS]a D;ksafd lHkh nsonkj o`{k lnkcgkj inkFkZ
gSa vkSj dqN iwtk ds inkFkZ nsonkj o`{k gSaA
(ii) lHkh izksVhu vkWxsZfud feJ.k gksrs gS]a vr% lHkh izfd.o izksVhu gS D;ksfa d lHkh
izfd.o vkWxZsfud feJ.k gSA
(iii) dksbZ Hkh fjifCydu MseksØsV ugha gS] vr% dqN MseksØsV /kuk<+~; LVkWd czksdj gS]
D;ksfa d dqN /kuk<~+; czksdj fjifCydu ugha gSA
Write each of the following syllogism in standard form and name its mood
and figure-
(i) Some evergreens are objects of worship, because all fir trees are
evergreens, and some objects of worship are fir trees.
(ii) All proteins are organic compounds, whence all enzymes are proteins,
as all enzymes are organic compounds
(iii) No republicans are democrats, so some democrats are wealthy
stockbrokers, since wealthy stockbrokers are not republicans.
4- mHk;r%ik”k dks ifjHkkf’kr djsAa mHk;r%ik”k fdrus izdkj ds gSa\ mHk;r%ik”k dk
[kaMu djsAa 3+3+4=10
Define the dilemma. How many kinds of Dilemma? Refute the
Dilemma.
v/kksfyf[kr ;qfDr;ksa esa] ;fn dksbZ rdZnks’k gks] rks mls Li’V dhft,& 3+3+4=10
(i) vkxUrqd ;k rks nq’V gSa ;k csodwQA og nq’V gSA vr% og csodwQ ugha gSA
(ii) ;fn jkWfcUlu cszdeSu gS rks jkWfcUlu f”kdkxks esa jgrk gSA jkWfcUlu f”kdkxks esa
ugha jgrk gSA vr% jkWfcUlu czsdeSu ughsa gSA
(iii) ;fn csdu us gSeysV fy[kk rks csdu ,d egku ys[kd FkkA csdu ,d egku
ys[kd FkkA vr% csdu us gSeysV fy[kkA

Explain the fallacies, if any, in the following arguments-
(i) The stranger is either a knave or a fool.
The stranger is a knave.
Therefore, the stranger is no fool.

(ii) No Robinson is the brakeman, then Robinson lives in Chicago.
Robinson does not live in Chicago.
Therefore, Robinson is not the brakeman.

(iii) If Bacon wrote Hamlet, then Bacon was a great writer.
Bacon was a great writer.
Therefore, Bacon wrote Hamlet.
5- fdl voLFkk ;k voLFkkvksa es]a ;fn dksbZ gks rks] D;k izFke vkd`fr dk ekud vkdkj
fujis{k U;k;okD; ftldk fu’d’kZ fof”k’V gks] oS/k gksxk\ N% fu;eksa dks yxkdj
mRrj nsAa 10
In what mood or moods, if any, can a first figure standard form
catergorical syllogism with a particular conclusion be valid?
Answer by appealing to the six rules.
v/kksfyf[kr ;qfDr;ksa esa] ;fn dksbZ rdZnks’k gks] rks mls Li’V dhft,& 3+3+4=10
(i) dqN rksrs dhV ugha gSaA
lHkh rksrs ikyrw i{kh gSaA
vr% dksbZ ikyrw i{kh dhV ugha gSA
(ii) dqN ghjs ewY;oku iRFkj gSAa
dqN dkcZu ;kSfxd ghjs ugha gSaA
vr% dqN dkcZu ;kSfxd ewY;oku iRFkj ugha gSaA
(iii) lHkh :lh ØkfUrdkjh FksA
lHkh vjktdrkoknh ØkfUrdkjh FksA
vr% lHkh vjktdrkoknh :lh FksA
Explain the fallacies, if any in the following arguments-
(i) Some parrots are not pests.
All parrots are pets.
Therefore No pets are pests.
(ii) Some diamonds are precious stones.
Some carbon compounds are not diamonds.
Therefore some carbon compounds are not precious stones.

(iii) All Russians were revolutionists.
All anarchists were revolutionists.
Therefore All anarchists were Russians.
6- izkDdYiuk dh ifjHkk’kk D;k gS\ “kq) izkDdYiuk dh “krksZa dh O;k[;k djsAa
4+6=10
What is the definition of Hypothesis? Explain the conditions of a
legitimate or Valid Hypothesis.
lkn`”;kuqeku D;k gS\ oSKkfud vkxeu ls bldh rqyuk dhft;sA 5+5=10
What is analogical argument? Compare it with scientific induction.
7- nks’kiw.kZ O;k[;k ls vki D;k le>rs gSa\ blds fofHkUu :iksa dh O;k[;k dhft,A
5+5=10
What do you understand by fault explanation ? Explain its
different forms.
fu;e dk D;k vFkZ gS\ mnkgj.k lfgr Li’V djsaA 10
What is the meaning of Law? Clear with examples.
8- oxhZdj.k fdls dgrs gSa\ blds fu;e D;k gSa\ 5+5=10
What is classification? What are its rules?
oSKkfud oxhZdj.k dk D;k vFkZ gS\ bldh lhekvksa dh O;k[;k dhft,A 4+6=10
What is meant by scientific classification? Explain its limits.
9- fujkdj.k ds fl)kar dh O;k[;k dhft,A 10
Explain the Canons of Elimination
lgifjorZu fof/k dh lksnkgj.k O;k[;k dhft,A blds fo”ks’k y{k.k D;k gSa \
5+5=10
Explain and illustrate the method of concomitant variations. What
are its special features? 5+5=10
10- v/kksfyf[kr ij fVIi.kh fyf[k,&
(i) miy{k.k nks’k
(ii) feF;kdkj.k nks’k
Write notes on the following-
(i) Fallacy of Accident
(ii) Fallacy of false cause

v/kksfyf[kr ;qfDr;ksa dk ijh{k.k dhft, vkSj ;fn muesa dksbZ nks’k gks rks crkb,&
3+3+4=10
(i) vijkf/k;ksa vkSj [krjukd ikxyksa dks dgha cUn j[kuk vko”;d gSA vr% yksxksa
dh Lora=rk Nhu ysuh pkfg,A
(ii) flusVj dks cnukeh dh gok rd Hkh ugha yx ldrh gSA vr% og bruk
bZekunkj gS fd mls Hkz’V ugha fd;k tk ldrk gSA
(iii) lQy O;fDr;ksa dh ifRu;ka [kphZys diM+s igurh gSAa vr% vius ifr dks lQy
cukus dk loksZRre rjhdk L=h ds fy, ;g gS fd og [kphZys diM+s [kjhnsA
Examine the following arguments and indicate the fallacies, if any
in them:
(i) Criminals and dangerous lunatics need to be locked up
somewhere. Therefore people freedom should be taken away.
(ii) Senator can’t even feel the wind of slander. Therefore He is so
honest that he cannot be corrupted.
(iii) Wives of successful people wear expensive clothes. Therefore
the best way for a woman to make her husband successful is to
buy expensive clothes.

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