Verbal Reasoning - Logical Deduction Questions

Q:

Read the question and answer from the given information.

 

Pravalika is studying 10th class, is Pravalika elder than Pranitha who is her classmate?

 

Argument 1: Yes, as she is her classmate Pranitha is younger to her

Argument 2: No, as she is classmate Pranitha is elder to her.

 

A) Neither I nor II follow B) Either I or II follow
C) Only II follow D) Only I follow
 
Answer & Explanation Answer: D) Only I follow

Explanation:
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Q:

An assertion and a reason are given below.

 

Assertion : When velocity is kept constant and wavelength is halved, then the frequency is doubled.

 

Reason : Velocity = Frequency x Wavelength

 

Choose the answer.

 

A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion B) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C) Both Assertion and Reason are false D) Assertion is true but Reason is false
 
Answer & Explanation Answer: A) Both Assertion and Reason are true and Reason is the correct explanation of Assertion

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Q:

Should students take part in politics?

Arguments:

1. Yes. It includes in the the quality of leader ship

2. No. They should study and build up their career

A) Only 1 is true B) Only 2 is true
C) Either 1 or 2 is true D) Neither 1 or 2 is true
 
Answer & Explanation Answer: C) Either 1 or 2 is true

Explanation:

Clearly ,indulgement in politics trains the students for future leader ship but it sways them from studies .So,either of argument 1 or 2 holds

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Q:

Read the statements and select a conclusion from the given alternatives.


Statement : Some mats are brooms. All the pencils are brooms.

 

Conclusion :

 

I. Some brooms are pearls.

II. Some brooms are mats.

 

A) Only I conclusion follows B) Only II conclusion follows
C) Either I or II follows D) Neither I nor II follows
 
Answer & Explanation Answer: B) Only II conclusion follows

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Q:

Four persons can cross a bridge in 3,7,13,17 minutes.Only two can cross at a time.Find the minimum time taken by the four to cross the bridge ?

A) 17 minutes B) 20 minutes
C) 34 minutes D) 12 minutes
 
Answer & Explanation Answer: B) 20 minutes

Explanation:

First send 17 and 7. After 7 minutes, 7 is at finish and 17 needs 10 more minutes to complete his travel. now send 13. After 10 minutes 17 reaches finish and 13 needs 3 more minutes to complete. now send 3. both 3 and 13 reach destination at the same time after 3 minutes. hence the time taken is 7+10+3=20 minutes.

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Q:

Consider the following statements & choose the correct options

 

When two straight lines intersect then,

 

1. Adjacent angles are supplementary

2. Opposite angles are supplementary

 

A) Both 1 & 2 are incorrect B) Both 1 & 2 are correct
C) 1 is incorrect and 2 is correct D) 1 is correct and 2 is incorrect
 
Answer & Explanation Answer: D) 1 is correct and 2 is incorrect

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Q:

Four thermal heaters A,B, C and D are used in the R & D department of Raliance chemicals Ltd. Only one heater can be used on any day . If heater A is used on any day, neither A nor C can be used the next day. If heater C is used on any day, neither C nor D can be used on the next day. If heater C is used on any day, then A has to be used the next day. If heater D is used on any day, then B has to be used the next day.

If heater D is used on the third day and different heaters are used on first and fourth day, which heater is used on the first day ?

   (1) D       (2) A       (3) B        (4) C

Answer

If heater D is used on the third day, heater B has to be used on the fourth day and A has to be used on the second day. But if A is used on second day, then either B or C has to be used on the first day. But if heater B is used on the first day, then according to the question, the requirement of having different heaters on the first day and fourth days would not be fulfilled. Hence the heater that would be used on the first day is C.

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Q:

An assertion (A) and a reason (R) are given below.

 

Assertion (A) : Tungsten filament is used for making light bulbs.

Reason (R) : Tungsten has a high melting point.

 

Choose the correct option.

 

A) Both A and R are true and R is the correct explanation of A B) Both A and R are true, but R is not the correct explanation of A
C) A is true, but R is false D) A is false, but R is true
 
Answer & Explanation Answer: A) Both A and R are true and R is the correct explanation of A

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