On This Page

This set of Essential of Formal Logic Multiple Choice Questions & Answers (MCQs) focuses on Essential Of Formal Logic Set 2

Q1 | The defining feature of a valid deduction is its
  • vagueness
  • uncertatinty
  • indefiniteness
  • certainty.
Q2 | Deductive arguments are typically ----------.
  • analytic
  • synthetic
  • intuitive
  • material.
Q3 | The relationship between premises and conclusion in a deductive argument is--.
  • cause-effect
  • analytic-synthetic
  • a priori-a posteriori
  • implication-entailment.
Q4 | In induction, reasoning proceeds to a conclusion that is ---------- to the scope of its premises.
  • confined
  • not confined
  • narrow
  • restricted.
Q5 | In inductive reasoning the conclusion is -------.
  • probable
  • certain
  • definite
  • predictable.
Q6 | Discovering a new ------- is permissible in inductive reasoning.
  • cause
  • effect
  • assumption
  • evidence.
Q7 | Inductive arguments are properly characterised as
  • valid-invalid
  • strong-weak
  • definite-indefinite
  • certain-uncertain.
Q8 | Induvtive method is identified with
  • religious activity
  • scientific activity
  • moral activity
  • aesthetic activity.
Q9 | A single ------ is enough to prove the inductive conclusion false.
  • intuition
  • assumption
  • counter-example
  • concept.
Q10 | An advantage of inductive reasoning is
  • to sustain existing belifs
  • to formulate valid arguments
  • to create aesthetic sense
  • to frame future expectations.
Q11 | Truth or Falsehood may be predicated of --------.
  • arguments
  • inferences
  • propositions
  • syllogism.
Q12 | Validity or Invalidity may be predicated of ---------.
  • deductive arguments
  • propositions
  • terms
  • concepts.
Q13 | The falsehood of a valid deductive argument’s conclusion guarantees that
  • the argument is sound
  • atleast one of the premise is false
  • premises are true
  • the validity is uncertain.
Q14 | If it is possible for the premises of a deductive argument to be true and its conclusion to be false, that argument is
  • valid
  • invalid
  • indescribable
  • sound.
Q15 | The claim of an inductive argument is that premises provide---------- for the conclusion.
  • invalidity
  • absolute evidence
  • no evidence
  • some evidence
Q16 | The following argument: Aristotle is human and mortal. Bacon is human and mortal. Castro is human and mortal. Descartes is human and mortal. Therefore all humans are mortal. is an example for --------- argument.
  • deductive
  • inductive
  • syllogistic
  • deduction-induction combined.
Q17 | A valid deductive argument with true premises is called a ------ argument.
  • sound
  • unsound
  • fallacious
  • dilemma.
Q18 | A deductive argument is sound if and only if it is
  • valid and all its premises are true
  • invalid and all its premises are true
  • is valid and one of the premise is false
  • is valid and its conclusion is false.
Q19 | Deduction and Induction are two main forms of---------.
  • beliefs
  • concepts
  • reasoning
  • assumptions.
Q20 | Deductive logic is also known as
  • intuitive logic
  • material logic
  • formal logic
  • scientific logic.
Q21 | Inductive logic is also known as
  • formal logic
  • model logic
  • material logic
  • sentential logic
Q22 | The following argument: “ All mammals have wings. All reptiles are mammals. Therefore all reptiles have wings ”. Is----------.
  • inductive
  • invalid
  • sound
  • valid.
Q23 | Deduction and Induction are two types of----------.
  • arguments
  • terms
  • prpositions
  • concepts.
Q24 | A term can have -------- in its proposition.
  • vague meaning
  • many meanings
  • no meaning
  • only one meaning.
Q25 | Words and names can become terms only if they are used in---------.
  • an argument
  • propostion
  • thought
  • reasoning.