Competitive Exams: Philosphy MCQs (Practice-Test 22 of 90)

  1. Which of the following statements are true in a valid argument?

    1. The truth of the premises is a necessary condition for the truth of the conclusion

    2. The truth of the conclusion is a necessary condition for the truth of the premises

    3. The truth of the premises is a sufficient condition for the truth of the conclusion

    4. The truth of the conclusion is a sufficient condition for the truth of the premises

    Select the correct answer using the codes given below:

    1. 1 and 4

    2. 1 and 2

    3. 3 and 4

    4. 2 and 3

  2. The validity of a deductive argument is determined by

    1. its content

    2. it from

    3. both its form and content

    4. the truth of its conclusion

  3. Consider the following propositions:

    1. Not all syllogisms having is true conclusion are valid

    2. Whatever is knowable is namable

    3. Few diplomatic statements are unambiguous

    4. Students often play cricket on a

    Sunday

    The correct sequence of these propositions in the traditional classification would be 1 2 3 4

    1. E I I A

    2. O A O I

    3. E A O I

    4. O A I A

  4. Consider the following statements:

    1. ‘Swami Vivekanand was born in Gujarat’ is a proposition

    2. Copula connects the predicate with the subject

    3. A statement that can be doubted is not a proposition

    4. A traditional proposition need not be in the form of an indicative sentence.

    Which of the above statements are incorrect?

    1. 1 and 4

    2. 3 and 4

    3. 2 and 3

    4. 1 and 2

  5. Given the following propositions:

    1. Not all scientists are philosophers

    2. All virtues are acquired

    3. No Indian can accept Pakistan's interpretation of the Kashmir problem

    Which one of the following statements is correct?

    1. Subject term is distributed in propositions 2 and 3 Predicate term is distributed in propositions 2 and 3.

    2. Subject term is distributed in propositions 1, 2 and 3. Predicate term is distributed in propositions 1 and 3

    3. Subject term is distributed in propositions 1, 2 and 3. Predicate term is distributed in proposition 2

    4. Subject term is distributed in propositions 1 and 2. Predicate term is distributed in propositions 2 and 3

  6. Given that the second disjunct of a disjunctive proposition is an implication whose antecedent is false, the disjunction

    1. must be false

    2. may be true

    3. must be true

    4. may be false

  7. Assuming that there are no crows on the moon, which of the following statements cannot be true?

    1. All crows on the moon are black

    2. No crows on the moon are black

    3. Some crows on the moon are black

    4. Some crows on the moon are not black

    Select the correct answer using the codes given below:

    1. 1, 2, 3 and 4

    2. 1 and 2

    3. 3 and 4

    4. 2 and 4

  8. Consider the following statements:

    1. Every sentence is a proposition

    2. A bi-conditional statement is false when both of its components are false

    3. A disjunctive statement may be true even when its first component is false

    4. The negation of a tautological statement is a contingent statement

    5. A statement which is false only if its first component is true and the second component is false, is called disjunction

    Which of the above statements are incorrect?

    1. 1, 3 and 4

    2. 2, 3 and 5

    3. 1, 2, 4 and 5

    4. 1, 2, 3 and 4

  9. If the major term of a syllogism is the predicate of the major premise, then the

    1. minor premise must be affirmative

    2. major premise must be negative

    3. minor premise must be universal

    4. major premise must be particular

  10. Which one of the following has a valid mood in which the minor term is the subject of an ‘O’ proposition?

    1. Figure I

    2. Figure II

    3. Figure III

    4. Figure IV

  11. Some athletes are not actors All actors are runners Therefore, some runners are not athletes. The figure and mood of the above mentioned syllogism are

    1. OAO in Figure IV

    2. IAO in Figure III

    3. OIE in Figure II

    4. OAO in Figure I

  12. Match List-I with List-II and select the correct answer:

    List-I (Rules) List-II (Fig. Of syllogism)
    1. If the major premise is affirmative, the minor premise must be universal

    2. If either of the premises is negative the major premise must be universal

    3. The conclusion must be particular

    4. One of the premises must be negative

    1. Figure I

    2. Figure II

    3. Figure III

    4. Figure IV

    • A
    • B
    • C
    • D
      • 1
      • 4
      • 3
      • 2
      • 4
      • 2
      • 3
      • 1
      • 3
      • 4
      • 2
      • 1
      • 4
      • 2
      • 1
      • 3
  13. A valid syllogism in the third figure must have

    1. an affirmative major premise and a universal conclusions

    2. a negative major premise and a universal conclusion

    3. an affirmative minor premise and a particular conclusion

    4. a negative minor premise and a universal conclusion

  14. The syllogism: ‘A few persons who are frustrated in life are virtuous because a few virtuous persons sufferer in life and those who suffer in life are necessarily frustrated’ commits

    1. the fallacy of undistributed middle

    2. the fallacy of illicit major

    3. the fallacy of illicit minor

    4. no fallacy

  15. Every student is an examinee because every examinee is an identity card holder and all identity card holders are students. The syllogism commits the fallacy of

    1. illicit minor

    2. illicit major

    3. undistributed middle

    4. ambiguous minor