Question 1

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

Accepted Answer

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

Question 2

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

Accepted Answer

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

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

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

Question 6

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

Accepted Answer

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

Question 7

The full contrapositive of 'All dealers are producers':

Accepted Answer

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

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

Accepted Answer

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

Question 9

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

Accepted Answer

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

Question 10

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

Accepted Answer

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

Question 11

The partial contrapositive of 'All dealers are producers':

Accepted Answer

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 12

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

Accepted Answer

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

Question 13

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

Accepted Answer

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

Question 14

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

Accepted Answer

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

Question 15

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

Accepted Answer

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

Question 16

The partial contrapositive of 'No dealers are producers':

Accepted Answer

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 17

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

Accepted Answer

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

Question 18

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

Accepted Answer

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

Question 19

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:

Accepted Answer

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

Question 20

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

Accepted Answer

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

Exam 5: Logical Reasoning Fallacies

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

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

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

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

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

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

The full contrapositive of 'All dealers are producers':

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

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

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

The partial contrapositive of 'All dealers are producers':

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

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

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

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

The partial contrapositive of 'No dealers are producers':

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

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

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:

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