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Q:

The velocity required to place a vehicle in orbit round the moon is _______ that required to place it in orbit round the earth 

A) less than B) Greater than
C) equal to D) greater than or equal to
 
Answer & Explanation Answer: A) less than

Explanation:

This orbital velocity at the moon is less because orbital velocity = rg

 

where 'r ' is the orbital radius. i.e the distance of the body from the center of the earth and 'g' is the acceleration due to gravity on the body in question. In the case of the moon, both r and g are less than in the case of the earth.

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Filed Under: Physics
Exam Prep: AIEEE , GATE

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Q:

Who has become the first person to cross the Atlantic Ocean on standup paddle ?

A) Jack Alberta B) Henary Christpher
C) Christopher Bernard D) Chris Bertish
 
Answer & Explanation Answer: D) Chris Bertish

Explanation:

South African Chris Bertish has become the first person to cross the Atlantic Ocean on standup paddle. He made the epic 4,050-mile voyage alone at sea aboard his custom-built craft.

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Filed Under: General Awareness
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Q:

The cause of Beri Beri was discovered by

A) Eijkman B) Macmillan
C) Alexanderson D) Cockrell
 
Answer & Explanation Answer: A) Eijkman

Explanation:
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Filed Under: Inventions

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Q:

Who was the first woman President of the Indian National Congress

A) Annie Besant B) Sarojini Naidu
C) Vijayalakshmi Pandit D) None of these
 
Answer & Explanation Answer: A) Annie Besant

Explanation:
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Filed Under: Famous Personalities

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Q:

Force of impact is the force

A) by the objects weight B) by the speed of the object
C) when the objects meet D) None of the above
 
Answer & Explanation Answer: C) when the objects meet

Explanation:

Force of impact is the force when the objects meet. The speed of the object plays an important role in the generation of force of impact. The laws of physics determine that the force of impact increases with the square of the increase in speed.

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Filed Under: Physics
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Q:

Which of the following is generally true about the stratosphere?

A) It is very dry B) It is very moist
C) The dryness level varies with the season D) The dryness level varies with the moon cycle
 
Answer & Explanation Answer: A) It is very dry

Explanation:

The stratosphere layer of the atmosphere is very dry.

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Filed Under: General Science
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Q:

Hypnology is the study of

A) blood B) nerves
C) sleep D) disease
 
Answer & Explanation Answer: C) sleep

Explanation:

Hypnology is the study of sleep.

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Filed Under: General Science
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Q:

"National Volunteer Day" is observed on ____ ?

A) 1st October B) 21st September
C) 11th October D) 29th September
 
Answer & Explanation Answer: B) 21st September

Explanation:

"National Volunteer Day" & "International Peace Day" are observed on 21st september every year.

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Filed Under: Important Days and Years
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