General Knowledge Questions

Q:

A boy is swinging a ball attached to a string in a horizotal circle. If the string snaps 

A) the ball will travel towards the center of the circle and fall down B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
C) it will fall down at the same place where the string breaks D) None of these
 
Answer & Explanation Answer: B) it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

Explanation:

The centripetal force having been removed the body cannot  execute the curved path

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Filed Under: Physics

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Q:

Geostationary orbit is at a height of

A) 6 km B) 1000 km
C) 3600 km D) 36,000km
 
Answer & Explanation Answer: D) 36,000km

Explanation:
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Filed Under: World Geography

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Q:

A lion eating a zebra is an example of

A) predation B) a keystone species
C) herbivory D) habitat destruction
 
Answer & Explanation Answer: A) predation

Explanation:
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Filed Under: Animals and Birds
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Q:

The gas usually filled in the electric bulb is

A) Hydrogen B) Oxygen
C) Nitrogen D) Carbon dioxide
 
Answer & Explanation Answer: C) Nitrogen

Explanation:

The gas usually filled in the electric bulb is Nitrogen.

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Filed Under: General Science
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Q:

Molar mass of HNO3?

A) 63 g/mol B) 53 g/mol
C) 48 g/mol D) 52 g/mol
 
Answer & Explanation Answer: A) 63 g/mol

Explanation:

Calculation of molar mass of HNO3:

Atomic masses of H, N, O are 1, 14, 16 respectively

Now the molar mass of HNO3 is

HNO3 = 1X1 + 1X14 + 3X16

= 1 + 14 + 48

= 63 g/mol or amu.

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Filed Under: Chemistry
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Q:

What occurs when an atom loses an electron?

A) The atom's radius decreases and the atom becomes a positive ion. B) The atom's radius increases and the atom becomes a negative ion.
C) The atom's radius decreases and the atom becomes a negative ion. D) The atom's radius increases and the atom becomes a positive ion.
 
Answer & Explanation Answer: A) The atom's radius decreases and the atom becomes a positive ion.

Explanation:

When an atom loses an electron it becomes a positive ion by acquiring negatively charged. When it loses electron, the atom's radius also decreased.

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Filed Under: Chemistry
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Q:

Indians who have been featured on Forbe's list of the 100 Greatest Living Business Minds ?

A) Ratan Tata B) Lakshmi Mittal
C) Vinod Khosla D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Three Indians – Ratan Tata, Lakshmi Mittal and Vinod Khosla have been featured on Forbe's list of the 100 Greatest Living Business Minds.

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Filed Under: Famous Personalities
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Q:

Which is Largest railway route in India ?

Answer



Dibrugarh in Assam to Kannyakumari in Tamil Nadu.


 

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