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Q:

A 150 m long train crosses another 210 m long train running in the opposite direction in 10.8 seconds. If the shorter train crosses a pole in 12 seconds, what is the speed of longer train ?

A) 75 kmph B) 80 kmph
C) 54 kmph D) 45 kmph
 
Answer & Explanation Answer: A) 75 kmph

Explanation:

Total distance = 150 + 210 = 360 mts

Time taken to cross each other when moving in opposite direction = 10.8 sec

Relative speed of trains = (350/10.8) x 18/5 = 3600/30 = 120 kmph

Speed of shorter train = (150/12) x 18/5 = 45 kmph

 

Hence, speed of longer train = 120 - 45 = 75 kmph.

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Filed Under: Problems on Trains
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Q:

Core of earth is also known as

A) Barysphere B) Centrosphere
C) Besosphere D) Lithosphere
 
Answer & Explanation Answer: A) Barysphere

Explanation:

Core of earth is also known as Barysphere.

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Filed Under: General Science
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Q:

Which of the following contain no calories?

A) Vitamins B) Carbohydrates
C) Proteins D) Alcohol
 
Answer & Explanation Answer: A) Vitamins

Explanation:

Vitamins have no calories.

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Filed Under: General Science
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Q:

The most common economic system in the world is a

A) Mixed B) Command
C) Planned D) Market
 
Answer & Explanation Answer: A) Mixed

Explanation:

Mixed economy is the most common economic system in the world.

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Filed Under: Indian Economy
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Q:

Which of the following professionals cannot diagnose a patient?

A) Nurse B) Specialist
C) Physician's assistant D) Medical doctor
 
Answer & Explanation Answer: A) Nurse

Explanation:

A nurse cannot diagnose a patient among the given options. 

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Filed Under: General Awareness
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Q:

Who has been honoured with Jnanpith Award for 2018?

A) Amitav Ghosh B) Raghuveer Chaudary
C) Krishna Sobti D) None of the above
 
Answer & Explanation Answer: A) Amitav Ghosh

Explanation:

English author Amitav Ghosh has been honoured with 54th Jnanpith Award for 2018 for his outstanding contribution towards literature.

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Filed Under: Honours and Awards
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Q:

Who won the Nobel Peace Prize in 1993?

A) Mother Teresa B) Nelson Mandela
C) C.V. Raman D) All of the above
 
Answer & Explanation Answer: B) Nelson Mandela

Explanation:

Nelson Mandela and Frederik Willem de Klerk has won the Nobel Peace Prize in 1993 for their work for the peaceful termination of the apartheid regime, and for laying the foundations for a new democratic South Africa.

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Filed Under: Honours and Awards
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Q:

Which molecule contains a nonpolar covalent bond?

A) Cl2 B) Br2
C) H2 D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

In all the given options, molecules are containing nonpolar covalent bonds.

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Filed Under: Chemistry
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