Deck 5: Logical Reasoning Fallacies

Question 1

The immediate inference in which subject and predicate are interchanged is known as:

A)conversion
B)obversion
C)contraposition
D)none of these

Answer 1

conversion

Question 2

The immediate inference in which the quality of a proposition is changed without change in the meaning is known as:

A)conversion
B)obversion
C)contraposition
D)none of these

Answer 2

obversion

Question 3

Two propositions having the same subject and predicate, differ in quality only, the opposed propositions are called:

A)contraries
B)sub-contraries
C)sub-alterns
D)contradictories

Answer 3

contraries

Question 4

Two propositions having the same subject and predicate, differ in quantity only, the opposed propositions are called :

A)contraries
B)sub-contraries
C)sub-alterns
D)contradictories

Question 5

Immediate inference in which from a given proposition another proposition having the contradictory of the given predicate as it's subject is inferred is called:

A)conversion
B)obversion
C)contraposition
D)none of these

Question 6

The partial contrapositive of 'All dealers are producers':

A)no non-producers are dealers
B)no non-producers are non-dealers
C)all dealers are non-producers
D)all non-dealers are producers

Question 7

The full contrapositive of 'All dealers are producers':

A)no non-producers are dealers
B)no non-producers are non-dealers
C)all dealers are non-producers
D)all non-dealers are producers

Question 8

The partial contrapositive of 'No dealers are producers':

A)some non-producers are dealers
B)some non-producers are non- dealers
C)all dealers are non-producers
D)all non-dealers are producers

Question 9

The partial contrapositive of 'Some dealers are not producers':

A)some non-producers are dealers
B)some non-producers are non- dealers
C)all dealers are non-producers
D)all non-dealers are producers

Question 10

The full contrapositive of 'Some dealers are not producers':

A)some non-producers are dealers
B)some non-producers are not non- dealers
C)all dealers are non-producers
D)all non-dealers are producers

Question 11

Name the fallacy: Ram is my friend Mohan is Ram's friend Therefore, Mohan is my friend

A)fallacy of four terms
B)ambiguous major
C)ambiguous minor
D)ambiguous middle

Question 12

Name the fallacy: No courageous creature flies The eagle is a courageous creature Therefore, the eagle does not fly

A)fallacy of four terms
B)ambiguous major
C)ambiguous minor
D)ambiguous middle

Question 13

Name the fallacy: No man is made of paper All pages are men Therefore,No pages are made of paper

A)fallacy of four terms
B)ambiguous major
C)ambiguous minor
D)ambiguous middle

Question 14

Name the fallacy: All men are mortal All dogs are mortal Therefore, All men are dogs

A)undistribute middle
B)ambiguous major
C)ambiguous minor
D)ambiguous middle

Question 15

Name the fallacy: Some intelligent persons are wise No wise persons are king Therefore, Some kings are not intelligent

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 16

Identify the fallacy: All men are mortal All men are intelligent Therefore, All intelligent persons are mortal

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 17

No Indians are ungrateful All Indians are religious Therefore ,No religious person is ungrateful

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 18

Identify the fallacy: All girls are shy This boy is shy Therefore , This boy is girl

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 19

Identify the fallacy: Al college teachers are graduates He is not a college teacher Therefore , He is not a graduate

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 20

Identify the fallacy: All cows are quadrupeds No dogs are cows Therefore , No dogs are quadrupeds

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 21

Identify the fallacy: All fishes live in water All frogs live in water Therefore ,All frogs are fishes

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 22

Identify the fallacy: All cold is dispelled by heat His ailment is cold Therefore , His ailment can be dispelled by heat

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 23

Identify the fallacy: Light is the opposite of darkness My purse is light Therefore ,my purse is the opposite of darkness

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 24

. Identify the fallacy: Red is a colour Blood is red Therefore ,blood is a colour

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle

Question 25

Identify the fallacy: All planets are round A wheel is round Therefore , a wheel is a planet

A)undistributed middle
B)illicit major
C)illicit minor
D)ambiguous middle