140+ Essential of Formal Logic Solved MCQs

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101.	A syllogism consists of _______ terms.
A.	five
B.	two
C.	three
D.	four.
Answer» C. three

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102.	A syllogism consists of ________ premisses.
A.	two
B.	three
C.	four
D.	five.
Answer» B. three

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103.	The major term is the _______________.
A.	subject of the conclusion
B.	copula
C.	predicate of the conclusion
D.	predicate of the minor premise.
Answer» B. copula

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104.	The minor term is the _______________.
A.	subject of the conclusion
B.	predicate of the conclusion
C.	subject of the major premise
D.	predicate of the major premise.
Answer» A. subject of the conclusion

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105.	That term which occurs in the premises and not in the conclusion is
A.	major term
B.	minor term
C.	copula
D.	middle term.
Answer» D. middle term.

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106.	__________ performs the function of an intermediary.
A.	major term
B.	middle term
C.	minor term
D.	copula.
Answer» B. middle term

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107.	Each term occurs ______ in the syllogism.
A.	once
B.	twice
C.	thrice
D.	four times.
Answer» B. twice

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108.	“B is a friend of C. A is a friend of B. Therefore A is a friend of C.” The above syllogism commits the fallacy of__________.
A.	quarterino-terminorum
B.	ambiguous major
C.	ambiguous minor
D.	equivocation.
Answer» A. quarterino-terminorum

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109.	____________ is a fallacy which occurs when a syllogism uses its major term in one sense in the premise and in a different sense in the conclusion.
A.	fallacy of ambiguous major
B.	fallacy of ambiguous minor
C.	fallacy of ambiguous middle
D.	fallacy of undistributed middle.
Answer» A. fallacy of ambiguous major

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110.	____________ is a fallacy which occurs when in a syllogism the minor term means one thing in the minor premise and quite another in the conclusion.
A.	fallacy of ambiguous major
B.	fallacy of ambiguous minor
C.	fallacy of ambiguous middle
D.	fallacy of undistributed middle.
Answer» B. fallacy of ambiguous minor

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111.	“ All donkeys are animals. All monkeys are animals. Therefore all monkeys are donkeys”. The fallacy committed by the above syllogism is
A.	ambiguous major
B.	ambiguous minor
C.	ambiguous middle
D.	undistributed middle.
Answer» D. undistributed middle.

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112.	The fallacy occurs when the major term which is not distributed in the major premise but distributed in the conclusion is
A.	ambiguous major
B.	undistributed middle
C.	illicit major
D.	equivocation.
Answer» C. illicit major

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113.	The fallacy occurs when the minor term which is not distributed in the minor premise but distributed in the conclusion is
A.	ambiguous minor
B.	undistributed middle
C.	equivocation
D.	illicit minor.
Answer» D. illicit minor.

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114.	The form of the syllogism as determined by the position of the middle term is
A.	figure
B.	mood
C.	quality
D.	quantity.
Answer» A. figure

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115.	There are _____ types of categorical syllogism known as figures.
A.	two
B.	three
C.	four
D.	five.
Answer» C. four

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116.	A _________ is a form of syllogism determined by the qulity and quantity of the three constituent propositions.
A.	mood
B.	figure
C.	middle termd
D.	conclusion.
Answer» A. mood

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117.	A syllogism in which the major premise is a hypothetical proposition, the minor and the conclusion are categorical propositions is a_______.
A.	categorical syllogism
B.	hypothetical syllogism
C.	disjunctive syllogism
D.	dilemma.
Answer» B. hypothetical syllogism

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118.	A hypothetical syllogism is also called______.
A.	conjunctive syllogism
B.	disjunctive syllogism
C.	categorical syllogism
D.	dilemma.
Answer» A. conjunctive syllogism

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119.	A constructive hypothetical syllogism is also known as _______.
A.	modus tollens
B.	modus ponens
C.	constructive dilemma
D.	addition.
Answer» B. modus ponens

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120.	Modus tollens is also known as________.
A.	constructive hypothetical syllogism
B.	constructive dilemma
C.	destructive dilemma
D.	destructive hypothetical syllogism.
Answer» D. destructive hypothetical syllogism.

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121.	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.
Answer» C. disjunctive syllogism

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122.	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
Answer» C. improper disjunction

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123.	______ is a valid mood of the first figure.
A.	baroco
B.	darapti
C.	fesapo
D.	barbara.
Answer» D. barbara.

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124.	________ is a valid mood of second figure.
A.	celarent
B.	cesare
C.	disamis
D.	bramantip.
Answer» B. cesare

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125.	________ is a valid mood of third figure.
A.	darii
B.	festino
C.	dimaris
D.	datisi.
Answer» D. datisi.

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126.	________ is valid mood of fourth figure.
A.	celerant
B.	cesare
C.	dimaris
D.	disamis.
Answer» C. dimaris

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127.	A Dilemma is a ________ syllogism.
A.	mixed
B.	categorical
C.	hypothetical
D.	disjunctive.
Answer» A. mixed

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128.	“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.
Answer» B. improper disjunction

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129.	“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.
Answer» A. mortal

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130.	“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.
Answer» A. illicit minor

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131.	__________ 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.
Answer» C. equivocation

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132.	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
Answer» C. valid

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133.	If one premise is negative the conclusion must be________.
A.	negative
B.	positive
C.	both negative and positive
D.	neither negative nor positive.
Answer» A. negative

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134.	Two_______ premises yield no valid conclusion.
A.	universal
B.	particular
C.	affirmative
D.	categorical.
Answer» B. particular

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135.	From two ________ premises no conclusion is possible.
A.	universal
B.	affirmative
C.	negative
D.	categorical
Answer» C. negative

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136.	If one premise is particular the conclusion must be_________.
A.	universal
B.	negative
C.	affirmative
D.	particulal.
Answer» D. particulal.

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137.	A dilemma is ________ when disjunctive minor premise affirms the antecedents of the major premise.
A.	constructive
B.	destructive
C.	objective
D.	subjective.
Answer» A. constructive

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138.	A dilemma is ________ when disjunctive minor premise denies the consequents of the major premise.
A.	constructive
B.	destructive
C.	subjective
D.	objective.
Answer» B. destructive

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139.	A dilemma is simple when the conclusion is__________ proposition.
A.	disjunctive
B.	implicative
C.	negative
D.	categorical.
Answer» D. categorical.

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140.	A dilemma is complex when the conclusion is __________ proposition.
A.	implicative
B.	categorical
C.	disjunctive
D.	negative.
Answer» C. disjunctive

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140+ Essential of Formal Logic Solved MCQs

A syllogism consists of _______ terms.

A syllogism consists of ________ premisses.

The major term is the _______________.

The minor term is the _______________.

That term which occurs in the premises and not in the conclusion is

__________ performs the function of an intermediary.

Each term occurs ______ in the syllogism.

“B is a friend of C. A is a friend of B. Therefore A is a friend of C.” The above syllogism commits the fallacy of__________.

____________ is a fallacy which occurs when a syllogism uses its major term in one sense in the premise and in a different sense in the conclusion.

____________ is a fallacy which occurs when in a syllogism the minor term means one thing in the minor premise and quite another in the conclusion.

“ All donkeys are animals. All monkeys are animals. Therefore all monkeys are donkeys”. The fallacy committed by the above syllogism is

The fallacy occurs when the major term which is not distributed in the major premise but distributed in the conclusion is

The fallacy occurs when the minor term which is not distributed in the minor premise but distributed in the conclusion is

The form of the syllogism as determined by the position of the middle term is

There are _____ types of categorical syllogism known as figures.

A _________ is a form of syllogism determined by the qulity and quantity of the three constituent propositions.

A syllogism in which the major premise is a hypothetical proposition, the minor and the conclusion are categorical propositions is a_______.

A hypothetical syllogism is also called______.

A constructive hypothetical syllogism is also known as _______.

Modus tollens is also known as________.

A ___________ is a mixed syllogism whose major premise is a disjunctive propositions and whose minor premise and conclusion are categorical propositions.

The violation of the rules of a disjunctive syllogism commits the fallacy of ________.

______ is a valid mood of the first figure.

________ is a valid mood of second figure.

________ is a valid mood of third figure.

________ is valid mood of fourth figure.

A Dilemma is a ________ syllogism.

“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________.

“All animals are mortal All men are animals Therefore all men are mortal.” _________ is the major term of the above syllogism.

“All thugs are murderers All thugs are Indians Therefore all Indians are murderers”. The fallacy commited by above argument is

__________ fallacy occurs when a term is used in two different meanings in the syllogism.

All Indians are hardworking All Keralites are Indians Therefore, All Keralites are hardworking The above argument is

If one premise is negative the conclusion must be________.

Two_______ premises yield no valid conclusion.

From two ________ premises no conclusion is possible.

If one premise is particular the conclusion must be_________.

A dilemma is ________ when disjunctive minor premise affirms the antecedents of the major premise.

A dilemma is ________ when disjunctive minor premise denies the consequents of the major premise.

A dilemma is simple when the conclusion is__________ proposition.

A dilemma is complex when the conclusion is __________ proposition.