Question 1

The principle in the school, when the teachers are in the class. (i) Principle is in the school. (ii) Principle is in town. (iii) Teachers are in class. (iv) Teachers are in the playground.

Accepted Answer

The statement is of the type 'when A then B, when not B then not A' where A is 'the teachers are in class' and B is 'principal is in the school'.

Question 2

Ram neither reads nor does he study. (i) Ram reads. (ii) Ram does not read. (iii) Ram studies. (iv) Ram does not study.

Accepted Answer

The statement is of the type 'neither A nor B'.

Question 3

Only when it is not quite, Reshma studies. (i) It is quiet. (ii) It is not quiet (iii) Reshma studies. (iv) Reshma does not study.

Accepted Answer

The statement has the logical connective 'only' and the statement does not imply that Reshma will study whenever it is not quiet.

Question 4

Only the toppers in Class 12 get admitted to IITs. (i) Sid got admission in IIT. (ii) Sid is a topper in Class 12. (iii) Sid did not get admission in IIT. (iv) Sid did not top in anything.

Accepted Answer

The statement has the connective and it does not imply that all toppers will get admitted.

Question 5

Arya takes fries only one only if she gets it free with a cheese burger. (i) Arya got a burger . (ii) Arya had fries. (iii) Arya got a cheese burger. (iv) Arya did not have fries.

Accepted Answer

The statement has the logical connective 'only and only' and this implies that when A then B and when B then A.

Question 6

Arjun falls asleep only if it is a soft bed. (i) Arjun fell asleep. (ii) Arjun remains awake. (iii) it was a soft bed . (iv) it was hard bed.

Accepted Answer

The statement has the logical connective 'only' and it does not imply that Arjun will fall asleep every time there is a soft bed.

Question 7

Only those living in Tilli are unfriendly. (i) Rohan lives in Tilli. (ii) Rohan lives in Rampur. (iii) Rohan is unfriendly (iv) Rohan may be unfriendly.

Accepted Answer

The statement has the logical connective 'only' and it does not imply that all those living in Tilli are unfriendly.

Question 8

Those visiting the Taj Mahal are either tourists or historians. (i) Siya is historian or a tourist. (ii) Riya is a tourist. (iii) Siya is visiting the Taj Mahal (iv) Riya is visiting the Taj Mahal

Accepted Answer

The statement is a simple 'either A or B'.

Question 9

When Anu comes first and Tanu comes second, Nikki and Sona cannot be selected in that order. (i) Anu and Tanu came first. (ii) Anu came first and Tanu came second (iii) Nikki and Sona got selected in that order. (iv) Sona and Nikki got selected in t…

Accepted Answer

The statement is of the type 'when A then B, when not B then not A' where A is 'Anu comes first and Tanu second' and B is 'Nikki and Sona cannot be selected in that order'.

Question 10

Only students or teacher visit the library. (i) Rajesh is in the library. (ii) Shiva is in the library. (iii) Rajesh is a student. (iv) Shiva may be a teacher.

Accepted Answer

The statement has the logical connective 'only' and this does not imply that all students or teacher will visit the library.

Question 11

Only romantic boys give roses to girls. (i) Ashok is romance. (ii) Ashok gave roses to a girl. (iii) Ashok did not give roses to a girl. (iv) Ashok is a romantic boy.

Accepted Answer

The statement has the logical connective 'only' and this does not imply that all romantic boys will give roses to girls but if a boy has given a rose to a girl, he must be romantic.

Question 12

If you propose to the government, it will relent. (i) Amit proposed to the government. (ii) Amit relented. (iii) Government relented. (iv) Government did not relent.

Accepted Answer

The statement is of the type: if A then B.

Question 13

All that flows have viscosity . (i) it flows. (ii) It does not flow. (iii) it has viscosity. (iv) It does not have viscosity.

Accepted Answer

The statement is of the type: if A (it flows) then B (have viscosity).

Question 14

If it happens on Sunday, it will happen again on Tuesday. (i) it happened on Sunday. (ii) it happened on Tuesday. (iii) it did not happen on Sunday. (iv) it did not happen on Tuesday.

Accepted Answer

The statement is of the type: if A (happens on Sunday) then B (happen again on Tuesday).

Question 15

Whenever Shashi makes coffee, Asha puts in sugar. (i) Shashi makes coffee. (ii) Asha makes coffee. (iii) Shashi puts in sugar. (iv) Asha puts in sugar.

Accepted Answer

The statement is of the type: when A (Shashi makes coffee) then B (Asha puts sugar in it).

Question 16

Sperman exits from the window, when Batman enters from the door. (i) Superman exits from the window. (ii) Batman enters from the door. (iii) Superman does not exit from the window. (iv) Batman does not enter from the door.

Accepted Answer

The statement is of the type: when A (Batman enters from the door) then B (Superman exits from the window).

Question 17

Anu drinks tea only when Dolly eats samosa. (i) Dolly ate samosa. (ii) Anu drank tea. (iii) Anu did not drink tea. (iv) Dolly did not eat samosa.

Accepted Answer

The statement is of the type: only when A (Dolly eats samosa) then B (Anu drink tea). But it does not imply that whenever Dolly eats samosa, Anu will drink tea.

Question 18

When clouds go high, they rain hail. (i) Clouds went high. (ii) it is raining hail. (iii) Clouds went low. (iv) it is not raining hail.

Accepted Answer

The statement is of the type: when A (clouds go high) then B (they rain hail).

Question 19

Mango rots when it is ripe. (i) Mango is ripe. (ii) Mango is not ripe. (iii) Mango rots. (iv) Mango does not rot.

Accepted Answer

The statement is of the type : when A (it is ripe) then B (mango rots).

Question 20

Only the hardy can climb Mount Sagarmatha. (i) Santosh climbed Sagarmatha. (ii) Santosh did not climb Sagarmatha. (iii) Santosh is hardy. (iv) Santosh may be hardy

Accepted Answer

The statement does not imply that all hardy can climb Mount Sagarmatha, but whoever does is surely hardy.

Logical Deduction Questions