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 General Science Questions

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Q:

Which layer of the earth's atmosphere contains the ozone layer?

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

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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:

Tamarindus indica is the scientific name of ________.

A) Neem B) Pineapple
C) Tamarind D) Chiku
 
Answer & Explanation Answer: C) Tamarind

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Q:

A school always has a

A) Library B) Headmaster
C) Teacher D) Building
 
Answer & Explanation Answer: C) Teacher

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Q:

What are Equinox days?

A) When day is smaller than night B) When day is the longest in the year
C) When day is greater than night D) When day and night are equal
 
Answer & Explanation Answer: D) When day and night are equal

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Q:

In terms of size, Neptune ranks no. ___ in our Solar System.

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

1 km/hr equals _____________ m/s

A) 5/18 B) 18/5
C) 5/16 D) 16/5
 
Answer & Explanation Answer: A) 5/18

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Q:

The salt concentration (measured as salinity in parts per thousand), is less than ______ % in inland waters.

A) 5 B) 20
C) 50 D) 75
 
Answer & Explanation Answer: A) 5

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