# Logical Reasoning 120 PYQS PART 5 FOR NTA UGC NET SET SLET

Logical Reasoning 120 PYQS PART 5 FOR NTA UGC NET SET SLET

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CBSE UGC NET DECEMBER 2015

Q.81If the proposition ‘No men are honest’ is taken to be false which of the following proposition/ propositions can be claimed certainly to be true?

Propositions:

(1) All men are honest

(2) Some men are honest

(3) Some men are not honest

(4) No honest person is man

CBSE UGC NET JULY 2016

Q.82Among the following propositions two are related in such a way that one is the denial of the other. Which are those propositions?  Select the correct code:

Propositions:

(a) All women are equal to men

(b) Some women are equal to men

(c) Some women are not equal to men

(d) No women are equal to men

Codes:

(1) (a) and (b)

(2) (a) and (d)

(3) (c) and (d)

(4) (a) and (c)

Q.83. If the proposition ‘All thieves are poor’ is false, which of the following propositions can be claimed certainly to be true?

Propositions:

(1) Some thieves are poor.

(2) Some thieves are not poor.

(3) No thief is poor.

(4) No poor person is a thief.

Q.84. Consider the following statement and select the correct code stating the nature of the argument involved in it:

To suppose that the earth is the only populated world in the infinite space is as absurd as to assert that in an entire field of millet only one grain will grow.

(1) Astronomical

(2) Anthropological

(3) Deductive

(4) Analogical

Q.85. Select the code which is not correct about Venn diagram:

(1) Venn diagram represents propositions as well as classes.

(2) It can provide clear method of notation.

(3) It can be either valid or invalid.

(4) It can provide the direct method of testing the validity.

Q.86. Select the code which is not correct in the context of deductive argument with two

premises:

(1) An argument with one true premise, one false premise and a false conclusion may be valid.

(2) An argument with two true premises and a false conclusion may be valid.

(3) An argument with one true premise, one false premise and a true conclusion may be valid.

(4) An argument with two false premises and a false conclusion may be valid.

Q.87. Given below are two premises and four conclusions are drawn from them (taking singly or together). Select the code that states the conclusions validly drawn.

Premises:

(i) All religious persons are emotional.

(ii) Ram is a religious person.

Conclusions:

(a) Ram is emotional.

(b) All emotional persons are religious.

(c) Ram is not a non-religious person.

(d) Some religious persons are not emotional.

Codes:

(1) (a), (b), (c) and (d)

(2) (a) only

(3) (a) and (c) only

(4) (b) and (c) only

CBSE UGC NET JAN 2017

Q.88. Given below are some characteristics of reasoning. Select the code that states a characteristic which is not of deductive reasoning:

(1) The conclusion must be based on observation and experiment

(2) The conclusion should be supported by the premise/premises

(3) The conclusion must follow from the premise/premises necessarily

(4) The argument may be valid or invalid

Q.89. Among the following propositions two are related in such a way that they cannot both be true but can both be false. Select the code that states those two propositions.

Propositions:

(a) Every student is attentive

(b) Some students are attentive

(c) Students are never attentive

(d) Some students are not attentive

Codes:

(1) (a) and (b)

(2) (a) and (c)

(3) (b) and (c)

(4) (c) and (d)

Q.90. Given below are two premises (a) and (b) . From those to premises four conclusions (i), (ii), (iii) & (iv) are drawn. Select the code that states the conclusions validly drawn from the premises (taking singly or jointly.)

Premises:

(a) Untouchability is a curse.

(b) All hot pans are untouchable.

Conclusions:

(i) All hot pans are curse.

(ii) Some untouchable things are hot pans.

(iii) All curses are untouchability.

(iv) Some curses are untouchability.

Codes:

(1) (i) and (ii)

(2) (ii) and (iii)

(3) (iii) and (iv)

(4) (ii) and (iv)

Q.91. If the statement ‘None but the brave wins the race’ is false which of the following statements can be claimed to be true?

Select the correct code:

(1) All brave persons win the race.

(2) Some persons who win the race are not brave.

(3) Some persons who win the race are brave.

(4) No person who wins the race is brave.

Q.92. If two standard form categorical propositions with the same subject and predicate are related in such a manner that if one is undetermined the other must be undetermined, what is their relation?

(1) Contrary

(2) Subcontrary

(4) Subaltern

Q.93. Men and woman may have different reproductive strategies but neither can be considered inferior or superior to the other, any more than a bird’s wings can be considered superior or inferior to a fish’s fins. What type of argument it is?

(1) Biological

(2) Psychological

(3) Analogical

(4) Hypothetical

CBSE UGC NET NOV 2017

Q.94. Given below are two premises (a and b). From those two premises four conclusions (i), (ii), (iii) and (iv) are drawn. Select the code that states the conclusion/conclusions drawn validly (taking the premises singularly or jointly).

Premises:

(a) All bats are mammals.

(b) No birds are bats.

Conclusions:

(i) No birds are mammals

(ii) Some birds are not mammals

(iii) No bats are birds

(iv) All mammals are bats.

Code:

(1) (iii) and (iv) only

(2) (i) only

(3) (i) and (ii) only

(4) (iii) only

Q.95. A deductive argument is invalid if:

(1) Its premises are all true but its cowl on is false.

(2) Its premises and conclusion are all true.

(3) Its premises and conclusion are all false.

(4) Its premises are all false but its conclusion is true.

Q.96. Just as melting ice-cubes do not cause a glass of water to overflow, melting sea-ice does not increase oceanic volume.

What type of argument is it?

(1) Statistical

(2) Analogical

(3) Hypothetical

(4) Psychological

Q.97. It is Truism to say that no one was there when life first appeared on earth. Any assertion about life’s origin, thus, should be treated as a theory.

The above two statements constitute:

(1) A conjecture

(2) A historical explanation

(3) A narrative

(4) An argument

Q.98. Given below are four statements. Among them two are related in such a way that they can both be true but they cannot both be false. Select the code that indicates those two statements:

Statements:

(a) Honest people never suffer.

(b) Almost all honest people do suffer.

(c) Honest people hardly suffer

(d) Each and every honest person suffers.

Code:

(1) (b) and (c)

(2) (a) and (b)

(3) (a) and (c)

(4) (a) and (d)

CBSE UGC NET JULY 2018

Q.99. Superiority of intellect depends upon its power of concentration on one theme in the same way as a concave mirror collects all the rays that strike upon it into one point.

(1) Mathematical

(2) Psychological

(3) Analogical

(4) Deductive

Q.100. Given below are two premises (A and B). Four conclusions are drawn from them. Select the code that states validity drawn conclusion (s) (taking the premises individually or jointly).

Premises:

(A) Most of the dancers are physically fit.

(B) Most of the singers are dancers.

Conclusions:

(a) Most of the singers are physically fit.

(b) Most of the dancers are singers.

(c) Most of the physically fit persons are dancers.

(d) Most of the physically fit persons are singers.

Code:

(1) (a) and (b)

(2) (b) and (c)

(3) (c) and (d)

(4) (d) and (a)