Top 150+ Solved Essential of Formal Logic MCQ Questions Answer
Q. A ___________ is a mixed syllogism whose major premise is a disjunctive propositions and whose minor premise and conclusion are categorical propositions.
a. categorical syllogism
b. hypothetical syllogism
c. disjunctive syllogism
d. dilemma.
Q. The violation of the rules of a disjunctive syllogism commits the fallacy of ________.
a. illicit major
b. illicit minor
c. improper disjunction
d. ambiguous major
Q. “He is either a saint or a sinner He is not a saint Therefore he is a sinner”. The above argument commits the fallacy of________.
a. undistributed middle
b. improper disjunction
c. four terms
d. illicit minor.
Q. “All animals are mortal All men are animals Therefore all men are mortal.” _________ is the major term of the above syllogism.
a. mortal
b. men
c. animals
d. are.
Q. “All thugs are murderers All thugs are Indians Therefore all Indians are murderers”. The fallacy commited by above argument is
a. illicit minor
b. illicit major
c. ambiguous major
d. undistributed middle.
Q. __________ fallacy occurs when a term is used in two different meanings in the syllogism.
a. undistribute middle
b. two negative premises
c. equivocation
d. illicit major.
Q. All Indians are hardworking All Keralites are Indians Therefore, All Keralites are hardworking The above argument is
a. invalid
b. false
c. valid
d. true
Q. If one premise is negative the conclusion must be________.
a. negative
b. positive
c. both negative and positive
d. neither negative nor positive.
Q. Two_______ premises yield no valid conclusion.
a. universal
b. particular
c. affirmative
d. categorical.
Q. From two ________ premises no conclusion is possible.
a. universal
b. affirmative
c. negative
d. categorical