Basic Logic Concepts In Philosophy MCQ

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• An argument form is invalid if and only if,
  ক

  it has no substitution instances with true premises and a false conclusion

  খ

  it has substitution instances with true premises and a false conclusion

  গ

  it has no substitution instances with false premises and a true conclusion

  ঘ

  it has substitution instances with false premises and a true conclusion
• Consider the following propositions and choose the correct answer.<br>"All judges are lawyers".<br>"Some judges are not lawyers".
  ক

  Both the statements are opposed in Quality only

  খ

  Both the statements are opposed in Quantity only

  গ

  The statements are opposed both in Quality and Quantity

  ঘ

  The statements are opposed in Quality and not in Quantity
• Select the option which does not show a nile of inference.
  ক

  Hypothetical syllogism

  খ

  Disjunctive syllogism

  গ

  Categorical syllogism

  ঘ

  Simplification
• To . . . . . . . . a proposition we change its quality and replace predicate term with its complement.
  ক

  Obversion

  খ

  Conversion

  গ

  Contraposition

  ঘ

  None of these
• Universal affirmative and Universal negative propositions are known as
  ক

  A, E

  খ

  A, I

  গ

  E, I

  ঘ

  A, O
• The position of middle term in the premises decides
  ক

  The mood of a syllogism

  খ

  The quantity of a syllogism

  গ

  The figure of a syllogism

  ঘ

  The quality of a syllogism
• What do you mean by connotation of terms?
  ক

  Featurelessness

  খ

  It denotes the objects

  গ

  It denotes the subject

  ঘ

  It connotes qualities and characteristics
• By interchanging subject and predicate term lead to which type of immediate inference.
  ক

  Obversion

  খ

  Conversion

  গ

  Contradictory

  ঘ

  Contraposition
• In the traditional square of opposition if O is false
  ক

  A is false, E is false, I is true

  খ

  A is true, E is false, I is true

  গ

  A is true, E is true, I is false

  ঘ

  None of the above
• Which philosopher talked about square of Opposition and in how many ways we can oppose a proposition?
  ক

  Plato and Aristotle talked about square of opposition and for them we can oppose a proposition in seven ways

  খ

  Aristotle opposed and for him there are four ways

  গ

  Socrates opposed and for him there is only one way to oppose a proposition

  ঘ

  None of the above
• In the traditional square of opposition, if 'O' is true, then
  ক

  A' is true; 'E' is false and 'I' is undetermined

  খ

  'A' is true; 'E' and 'I' is undetermined

  গ

  'A' is false; 'E' and 'I' is undetermined

  ঘ

  A' is false; 'E' and 'I' are true
• The middle term is regarded as what in the fourth figure?
  ক

  The predicate term of the middle premise

  খ

  The subject term of minor premise

  গ

  The predicate term of conclusion

  ঘ

  The subject term of the conclusion
• Select the option which is not correct.
  ক

  An affirmative singular proposition asserts that a particular individual has some specified attribute

  খ

  Quantification do not alter the rules of inference

  গ

  A valid syllogism is a formally valid argument, valid by the virtue of its content

  ঘ

  'p.q ⊃ m v r' is a contingent statement.
• What do you mean by first rule?
  ক

  Middle term is distributed in atleast one premise

  খ

  Major and minor term must be distributed in the premises and as well in the conclusion

  গ

  Major term must be distributed

  ঘ

  Minor term must be distributed
• Which two laws of thought are taken are corollaries?
  ক

  Law of non-contradiction and law of reflection

  খ

  Law of excludsd middle and law of inclusion

  গ

  Law of non-contradiction and law of identity

  ঘ

  Law of non-contradiction and law of excluded middle
• The proposition that denies the relations of inclusion between the two terms denies its universality
  ক

  Particular affirmative

  খ

  Universal affirmative

  গ

  Particular negative

  ঘ

  Universal negative
• If the proposition 'All men are mortal' is true, what is the truth-value of the proposition 'Some men are not mortal'?
  ক

  True

  খ

  False
• What do you mean by the denotation of terms?
  ক

  It denotes nothing

  খ

  It denotes everything

  গ

  It denotes object

  ঘ

  It denotes features
• A deductive argument is valid if its premises
  ক

  Do provide conclusive proof of its conclusion

  খ

  Do provide empirical truth for its conclusion

  গ

  Are true

  ঘ

  None of the above
• No whales are fishes', . . . . . . . . the subalternation form of the above E proposition will be
  ক

  Some whales are fishes-I

  খ

  Some whales are not fishes-O

  গ

  All fishes are whales-A

  ঘ

  None of the above
• Consider the Assertion (A) and Reason (R) and select the correct answer:<br>Assertion (A) If one premise is particular, the conclusion must be particular.<br>Reason (R) (i) An affirmative particular has no distributed terms, and a negative particular has an only one.<br>(ii) The premises cannot both be particular and thus must differ in quantity.
  ক

  A and R both are true but R (i) and (ii) correct explanations of A

  খ

  A and R both are true but R (i) is correct explanation of A

  গ

  A and R both are true but R (ii) is a correct explanation of A

  ঘ

  A is true, but R (i) and (ii) are incorrect explanations of A
• These two kinds of proposition are said to be conditional
  ক

  Disjunctive and Hypothetical

  খ

  Hypothetical and Categorical

  গ

  Universal and Particular

  ঘ

  Affirmative and Negative
• There are honest politicians', the standard logical form of this proposition will be
  ক

  All politicians are honest beings

  খ

  Some politicians are honest beings

  গ

  Some politicians are not honest beings

  ঘ

  All of the above
• What is the study in which we try to distinguish correct from incorrect reasoning is
  ক

  fact many students do not like it than logic is difficult

  খ

  Logic

  গ

  Economics

  ঘ

  Science
• If "No scientists are philosophers" is true, what may be inferred about the truth and falsity of the proposition?<br>1. No non-philosophers are scientists<br>2. No-non scientists are non-philosophers<br>3. No philosopher are non scientists<br>Out of these statements
  ক

  All are true

  খ

  All are false

  গ

  Both 1 and 3 are false and 2 is undermined

  ঘ

  Both 1 and 3 are true and 2 is false
• In Logic, how many valid syllogism are possible
  ক

  Ten

  খ

  Fifteen

  গ

  Twenty

  ঘ

  Eighteen
• What is the example of connotation?
  ক

  Philosophy

  খ

  Jantar Mantar

  গ

  Doctrine

  ঘ

  Slim and Tall
• Propositions are<br>1. Categorical<br>2. Conditional<br>3. Hypothetical<br>4. Disjunctive<br>Select the correct answer:
  ক

  1, 2 and 3

  খ

  2, 3 and 4

  গ

  1, 3 and 4

  ঘ

  All of these
• Beginning from the evidence and procedure towards conclusion, that we are doing in logic
  ক

  Inference

  খ

  Proof

  গ

  Belief

  ঘ

  Faith
• Particular Affirmative and Particular negative propositions are known as
  ক

  I, A

  খ

  E, O

  গ

  I, O

  ঘ

  A, O