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 General Science Questions

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Q:

A bomb explodes on the moon. You will hear its sound on earth after _________

A) 20 minutes B) 2 hrs 20 minutes
C) 3.7 hours D) You cannot hear the sound of explosion
 
Answer & Explanation Answer: D) You cannot hear the sound of explosion

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Q:

Helium is added to the oxygen supply of deep sea divers because it is _________

A) less poisonous than nitrogen B) Lighter than nitrogen
C) Readily miscible with oxygen D) less soluble in blood than nitrogen at high pressure
 
Answer & Explanation Answer: D) less soluble in blood than nitrogen at high pressure

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Q:

Limonitic ore is the ore of which metal?

A) Iron B) Aluminium
C) Zinc D) Cobalt
 
Answer & Explanation Answer: A) Iron

Explanation:

Limonite is one of the two principal iron ores, the other being hematite, and has been mined for the production of iron.

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Q:

The innermost layer is the core with a radius of about ___________ km.

A) 500 B) 6500
C) 9500 D) 3500
 
Answer & Explanation Answer: D) 3500

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Q:

The wilting of plants takes place due to _____.

A) Photosynthesis B) Transpiration
C) Absorption D) Respiration
 
Answer & Explanation Answer: B) Transpiration

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Q:

Sullage water is_______

A) Waste water released from kitchen B) waste water released from toilets
C) waste water released from factories D) waste water released from hospitals
 
Answer & Explanation Answer: A) Waste water released from kitchen

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Q:

Who coined the term "Ecology"?

A) Ernst Haeckel B) G. Evelyn Hutchinson
C) Hugo de Vries D) Robert Brown
 
Answer & Explanation Answer: A) Ernst Haeckel

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Q:

What does BOD5 refer to?

A) Biochemical Oxygen Demand in 5 days B) Biochemical Oxygen Demand in 5 hours
C) Biochemical Oxygen Demand in 5 minutes D) Biochemical Oxygen Demand in 5 Months
 
Answer & Explanation Answer: A) Biochemical Oxygen Demand in 5 days

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