IGNOU BPYC-133 December 2025 Previous Year Question Paper

Q1.How does Western deductive logic differ from Indian logic ? What are the salient features of Indian logic ?

Q2.Define fallacies. Explain fallacies of relevance in detail.

Q3.What is a dilemma ? Explain the different ways avoiding a dilemma in detail.

Q4.Write an essay on Existential Import and the Boolean interpretation of categorical propositions.

Q5.Answer any two of the following questions in about 200 words each :

(a) Write a note on the arguments against inductive and deductive reasoning. 10

(b) Define truth and validity. What is the significance of validity in deductive logic ? 10

(c) Test the validity of the following syllogistic moods using Venn diagram technique : 2.5x4=10

Q6.AIL-3

(ii) EAE-4

(iii) AOO-2

(iv) AEE-1

(d) Test the validity or invalidity of the following arguments using truth table method : 5x2=10 @ Pv@-q Gi) Poq

Q7.Answer any four of the following questions in about 150 words each :

(a) Write a note on _ tautologous, self- contradictory and contingent propositions. 5

(b) Differentiate between Pure and Mixed hypothetical syllogism. 5

(c) Find the converse and obverse of the following propositions : 2.5x2=5

(i) Some metals are conductors.

(1) No saints are martyrs.

(d) Translate the following statements into standard form categorical propositions : 1x5=5 @)_ All students are not hard-working.

(ii) Roses are red.

(ii) All is well that ends well.

(iv) Whoever votes, is a good citizen.

(v) Only adults can enter cinema halls

(e) Differentiate between proposition and sentence. 5

(f) Distinguish between categorical and conditional propositions.

Q8.Write short notes on any five of the following in about 100 words each :

(a) Vyapti 4

(b) The appeal to emotion 4

(c) Conjuction 4

(d) Hetvabhasa 4

(e) Sound argument 4

(f) Disjunctive syllogism 4

(g) Negation 4

(h) Subcontraries

Q9.AII-3

(ii) EAE-4

(iii) AOO-2

(iv) AEE-1 Gi) Pog