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 General Science Questions

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Q:

The outermost layer of sun is called

A) Lithosphere B) Chromosphere
C) Photosphere D) Corona
 
Answer & Explanation Answer: B) Chromosphere

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Q:

What is the process of waste water treatment is commonly known?

A) Waste water management B) Cleaning of water
C) Sewage treatment D) Decontamination
 
Answer & Explanation Answer: C) Sewage treatment

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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:

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:

If a healthy freshwater fish is placed in salt water, what will be the expected consequence ?

A) The fish becomes dehydrated and dies B) The fish becomes bloated and dies
C) The fish suffers from fungal or bacterial disease and dies D) There is no observable effect on the fish provided there is sufficient food
 
Answer & Explanation Answer: A) The fish becomes dehydrated and dies

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Q:

The outermost layer of the earth's atmosphere is _______.

A) stratosphere B) troposphere
C) mesosphere D) exosphere
 
Answer & Explanation Answer: D) exosphere

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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:

The centre of a cyclone is a calm area, it is called the ________ of the storm.

A) point B) needle
C) eye D) limit
 
Answer & Explanation Answer: C) eye

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