Logic & Critical Thinking Past Papers


Subject: Logic & Critical Thinking (Commerce)

Time Allowed: 15 Minutes

Maximum Marks: 10

NOTE: Attempt this Paper on this Question Sheet only.  Please encircle the correct option. Division of marks is given in front of each question. This Paper will be collected back after expiry of time limit mentioned above.


Part-I Encircle the right answer, cutting and overwriting are not allowed. (10)

1. An argument consists of one or more premises and conclusion,
A. One
B. Two
C. Three
D. Four
2. A one of the following word is a conclusioa indicator?
A. But
B. Because
C. Since
D. Hence
3. Which one of the following is always a false proposition?
A. Tautology
B. Contingent

C. Contradictory
D. None of the above
4. An inductive argument is intended to provide:
A. Valid support for its conclusion
B. Probable support for its conclusion
C. Truth preserving support for its conclusion
D. Conclusive support for its conctusion
5. When two statements arc combined with the word “UNLESS” the resultant proposition is known a:
A. Disjunction
B. Conjunction
C. Antecedent
D. Consequent
6. An argument with truc premises and true conclusion is known as
A. Strong Argument
B. Sound Argument
C. Weak Argument
D. Competing argument
7. Each Categorical proposition has a
A. Subject term and a predicate term
B. Subject and the middle term
C. Predicate term and middle term
D. None of the above
8. In a proposition of the form “IF P Then Q”, P is known as
A. Antecedent
B. Consequent
C. Cause
D. Effect
9. A fallacy committed when a syllogism contains all negative premises ,
A. Exclusive Fallacy
B. Existential Fallacy
C. Inclusive Fallacy
D. Negative Fallacy
10. Converse of “NO S are P” is
A. ALL P are S
B. NO P are S
C. Some P are S
D. Some P are not S


Subject: Logic & Critical Thinking (Commerce)

Time Allowed: 2 Hours 45 Minutes

Maximum Marks: 50



Part-II Differentiate between the following terms, each question carries equal marks. (20)

Q#1: Tautology and contradictory

Q#2: Proposition and statement

Q#3: Inference and argument

Q#4: Subject term and predicate term

Q#5: Major and minor premise

Q#6: Conclusion and premise indicators

Q#7: Universal and existential quantifier

Q#8: Inductive and deductive reasoning

Q#9: Hasty and Sweeping Generalization


Part-III Give detailed answers, each question carries equal marks. (30)

Q#1: Use truth table to prove the validity of the following arguments. Justify your answer



/~ P



Q#2: Discuss various uses of language. Provide examples

Q#3: What is a fallacy of ambiguity? Discuss at least Three Fallacies of Ambiguity.

Prof.Fazal Rehman Shamil (Available for Professional Discussions)
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