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 General Science Questions

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Q:

First human who got married in space is

A) Yuri Denver B) Yuri Johnson
C) Yuri Malenchenko D) David Malenchenk
 
Answer & Explanation Answer: C) Yuri Malenchenko

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Q:

Which of the following planets has the highest average density?

A) Jupiter B) Mars
C) Earth D) Mercury
 
Answer & Explanation Answer: D) Mercury

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Q:

A level of atmosphere which is composed partly of electrons and positive ions is called

A) Troposphere B) Ionosphere
C) Stratosphere D) Mesosphere
 
Answer & Explanation Answer: B) Ionosphere

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Q:

___________ is the process of restoring a forest that once existed but was removed at some point of time in the past.

A) Deforestation B) Reforestation
C) Greenhouse D) Jhum cultivation
 
Answer & Explanation Answer: B) Reforestation

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Q:

In 2015, underground glaciers of frozen water were discovered on

A) Mars B) Venus
C) Jupiter D) Saturn
 
Answer & Explanation Answer: A) Mars

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Q:

What is organic matter in soil is also called

A) residue B) humus
C) occlusion D) compact
 
Answer & Explanation Answer: B) humus

Explanation:

In soil, organic matter consists of plant and animal material that is in the process of decomposing. When it has fully decomposed it is called humus. Soil organic matter serves as a reservoir of nutrients for crops, provides soil aggregation, increases nutrient exchange, retains moisture, reduces compaction,... 

This humus is important for soil structure because it holds individual mineral particles together in clusters.

 

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Q:

What is the main cause of temperature rise in the interior of the Earth?

A) Pressure B) Breakdown of radioactive substances
C) Both the pressure and breakdown of radioactive substances D) No option is correct
 
Answer & Explanation Answer: C) Both the pressure and breakdown of radioactive substances

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Q:

Ananas comosus is the scientific name of ________.

A) Custard Apple B) Pineapple
C) Bamboo D) Pomegranate
 
Answer & Explanation Answer: B) Pineapple

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