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 General Science Questions

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Q:

Why does a black board appears black in colour?

A) It reflects black colour B) It absorbs black colour
C) It reflects all colours D) It absorbs all the colours
 
Answer & Explanation Answer: D) It absorbs all the colours

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Q:

The largest source of pollution in the world is

A) herbicides and insecticides B)  Automobile exhausts
C) Sewage and garbage D)  Industrial effluents
 
Answer & Explanation Answer: C) Sewage and garbage

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Q:

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that ______.

A) the food is not cooked completely B) the fuel is not burning completely
C) the fuel is wet D) the fuel is burning completely
 
Answer & Explanation Answer: B) the fuel is not burning completely

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Q:

The Flynn Effect refers to the

Answer

The Flynn Effect refers to the observed rise in IQ scores over time, resulting in norms obsolescence.

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Q:

The hormone that helps plants respond to drought is

A) Ethylene B) Cytokinin
C) Abscicic acid D) Auxin
 
Answer & Explanation Answer: C) Abscicic acid

Explanation:

The hormone that helps plants respond to drought is Abscicic acid.

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Q:

Fruits preserved in cold storage last longer because -

A) exposure to humidity is increased B) more oxygen is available
C) fruits are stored in a dark place D) the rate of respiration of Fruits is decreased
 
Answer & Explanation Answer: D) the rate of respiration of Fruits is decreased

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Q:

Name the scientist who proposed the cell theory

A) Schleiden and Schwann B) Lamarck
C) Treviranus D) Whittaker and Stanley
 
Answer & Explanation Answer: A) Schleiden and Schwann

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Q:

A hard coal containing little volatile matter is called ______.

A) Loess B) Anthracite
C) Atoll D) Lava
 
Answer & Explanation Answer: B) Anthracite

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