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Q:

Two trains having equal lengths, take 10 seconds and 15 seconds respectively to cross a post. If the length of each train is 120 meters, in what time (in seconds) will they cross each other when traveling in opposite direction?

A) 10	B) 25
C) 12	D) 20

Answer & Explanation Answer: C) 12

Explanation:

Speed of train 1 = $(\frac{120}{10}) m / s e c$ = 12 m/sec

Speed of train 2 = $(\frac{120}{15}) m / s e c$ = 8 m/sec

if they travel in opposite direction, relative speed = 12 + 8 = 20 m/sec

distance covered = 120 + 120 = 240 m

time = distance/speed = 240/20 = 12 sec

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Filed Under: Problems on Trains

Q:

Two stations P and Q are 110 km apart on a straight track. One train starts from P at 7 a.m. and travels towards Q at 20 kmph. Another train starts from Q at 8 a.m. and travels towards P at a speed of 25 kmph. At what time will they meet?

A) 10.30	B) 10
C) 8.45	D) 9.30

Answer & Explanation Answer: B) 10

Explanation:

Assume both trains meet after x hours after 7 am

Distance covered by train starting from P in x hours = 20x km

Distance covered by train starting from Q in (x-1) hours = 25(x-1)

Total distance = 110

=> 20x + 25(x-1) = 110

=> 45x = 135

=> x= 3

Means, they meet after 3 hours after 7 am, ie, they meet at 10 am

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Filed Under: Problems on Trains

Q:

Archipelago : Islands :: Massif : ?

A) Caves	B) Hillocks
C) Mountains	D) Forests

Answer & Explanation Answer: C) Mountains

Explanation:

First is a group of the second.

Hence, Archipelago : Islands :: Massif : Mountains.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

Q:

There is a certain relation between two given words on one side of : : and one word is given on another side of : : while another word is to be found from the given alternatives, having the same relation with this word as the given pair has. Select the best alternative Aeroplane:Cockpit::Train:?

A) Wagon	B) Coach
C) Compartment	D) Engine

Answer & Explanation Answer: D) Engine

Explanation:

As the pilot of an aeroplane sits in the cockpit,
the driver of a train works in the engine.

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Filed Under: Verbal Reasoning - Mental Ability

Q:

Antigens 'A' and 'B' are absent in persons belong to blood group

A) 'O'	B) 'A'
C) 'B'	D) 'AB'

Answer & Explanation Answer: A) 'O'

Explanation:

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Filed Under: Biology

Q:

The valve present between left auricle and left ventricle is

A) Mitral	B) Tricuspid
C) Semilunar	D) Pulmonary

Answer & Explanation Answer: A) Mitral

Explanation:

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Filed Under: Biology

Q:

karl Landsteiner discovered

A) Blood corpuscles	B) Blood groups
C) Blood vessels	D) Proteins in Blood

Answer & Explanation Answer: B) Blood groups

Explanation:

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Filed Under: Biology

Q:

The gland that is present close to Trachea

A) Pancreas	B) Liver
C) Adrrenal	D) Thyroid

Answer & Explanation Answer: D) Thyroid

Explanation:

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Filed Under: Biology

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