3100+ Mental Ability Reasoning Questions and Answers with Explanation

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion(A) : Graphite is slippery and used as a lubricant.

Reason (R) : Graphite has free electrons.

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: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

Graphite possesses a layer structure with two successive layers held by weak forces and able to slide over one another. So, graphite is slippery and this property finds its use as a lubricant. In graphite, each carbon atom is linked to three other carbon atoms while one electron in the carbon atom is delocalised. So, graphite has free electrons

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Filed Under: Assertion and Reason

20 23177

Q:

Find the value of (?) in the series

3, 4, 6, 8, 12, ?, 18

A) 13	B) 14
C) 15	D) 16

Answer & Explanation Answer: B) 14

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

16 23175

Q:

Select the term missing from the given series?

PG, QH, RI, ?

A) LT	B) ST
C) JK	D) SJ

Answer & Explanation Answer: D) SJ

Explanation:

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Filed Under: Alphabet Test
Exam Prep: Bank Exams

3 23129

Q:

In the following question, select the missing number from the given series.

59, 68, 78, 89, 101, ?

A) 116	B) 114
C) 118	D) 120

Answer & Explanation Answer: B) 114

Explanation:

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Filed Under: Number Series
Exam Prep: Bank Exams

1 23048

Q:

Bruise is to Fall as Bump is to

A) Lump	B) Knock
C) Limp	D) Wound

Answer & Explanation Answer: B) Knock

Explanation:

After falling it bruises, similarly after knocking it bumps.

Hence, Bruise : Fall :: Bump : Knock.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

19 23033

Q:

Introducing a man, a woman said. "His wife is the only daughter of my father." How is that man related to the woman ?

A) Brother	B) Father-in-law
C) Maternal uncle	D) Husband

Answer & Explanation Answer: D) Husband

Explanation:

Only daughter of my father — Myself. So, the man is woman's husband.

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Filed Under: Blood Relations

56 22993

Q:

A cow was standing on a bridge, 5m away from the middle of the bridge. A train was coming towards the bridge from the ends nearest to the cow. Seeing this cow ran towards the the train and managed to escape when the train was 2m away from bridge. If it had run in the opposite direction, it would hit by the train 2m before the end of the bridge. What is the lenght of the bridge in meters assuming the speed of the train is 4 times that of cow ?

A) 22 mts	B) 28 mts
C) 32 mts	D) 34 mts

Answer & Explanation Answer: C) 32 mts

Explanation:

let 'b' be the Length of bridge from cow to the near end of the bridge and 'a' be the distance of the train from the bridge.
'x' be speed of cow => '4x' speed of train
Then the total length of the bridge 2b + 10.
(a-2)/4x = b/x
=> a-2 = 4b........(1)
Now if it had run in opposite direction
(a+2b+10-2)/4x = (b+10-2)/x
=> a - 2b = 24......(2)
Solving (1) and (2)
b = 11 ,
Therefore length of the bridge is 2 x 11 + 10 = 32mts.

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Filed Under: Arithmetical Reasoning
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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64 22941

Q:

Arrange the given words in the sequence in which they occur in the dictionary.

i. Heredity
ii. Hesitate
iii. Heavy
iv. Herald

A) iii, iv, i, ii	B) i, iv, iii, ii
C) ii, iii, i, iv	D) iv, iii, ii, i

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