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 General Science Questions

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Q:

The core of the earth is also known as ______

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

Explanation:
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Q:

How much time does a Geostationary satellite take to complete one orbit, at the height of 35790 km?

A) 30 days B) 24 hours
C) 365 days D) 12 hours
 
Answer & Explanation Answer: B) 24 hours

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Q:

Which one of the following gases is released mostly from landfills in urban areas?

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

Explanation:

Decomposing waste in the landfills, by the action of microorganisms, produce methane and carbon dioxide. Landfill gas consists of 40-60% of methane and rest is carbon dioxide. Trace amount of volatile organic compounds (<1) are also present which mainly comprise of hydrocarbons.

 

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Q:

Azolla increases soil fertility for ....

A) maize cultivation B) wheat cultivation
C) barley cultivation D) rice cultivation
 
Answer & Explanation Answer: D) rice cultivation

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Q:

A solar cell is made up of:

A) Carbon B) Gallium
C) Silicon D) Teflon
 
Answer & Explanation Answer: C) Silicon

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Q:

In December 2015, NASA's Curiosity Mars rover found the presence of ____, which will help scientists learn about the ancient wet environment.

A) Magnesium B) Cadmium
C) Silica D) Calcium
 
Answer & Explanation Answer: C) Silica

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Q:

What are proteins made from?

A) Nucleotides B) Nucleic acids
C) Aminoacids D) Ethylene
 
Answer & Explanation Answer: C) Aminoacids

Explanation:

Proteins are made from chain of aminoacids.

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Q:

Which atmospheric layer contains ozone layer?

A) Genosphere B) Zonosphere
C) Stratosphere D) Ionosphere
 
Answer & Explanation Answer: C) Stratosphere

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