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 General Science Questions

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Q:

Which is the warmest layer of the atmosphere?

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

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Q:

What is the mean temperature of Earth?

A) 6 degree Celsius B) 16 degree Celsius
C) 26 degree Celsius D) 36 degree Celsius
 
Answer & Explanation Answer: B) 16 degree Celsius

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Q:

Equal day/night in both hemispheres is on ________.

A) 21st June and 21st March B) 5th July and 21st September
C) 21st March and 23rd September D) 5th June and 21st September
 
Answer & Explanation Answer: C) 21st March and 23rd September

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Q:

Spring tides occur when ______.

A) the moon, the sun and the earth are in the same line B) the sun is closest to earth
C) the moon is farthest from earth D) the earth is at right angles with the sun and the moon
 
Answer & Explanation Answer: A) the moon, the sun and the earth are in the same line

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Q:

The liberation of oxygen during photosynthesis is due to __________

A) hydrolysis of carbohydrates B) photolysis of water
C) reduction of CO2 D) breakdown of chlorophyll
 
Answer & Explanation Answer: B) photolysis of water

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Q:

Which one of the following statements with regard to volcanoes is not correct?

A) Stratovolcanoes produce lava flows that initially follow valleys but are highly resistant to erosion. B) The surrounding areas can remain highlands, lava ridges or mesas.
C) Hawaiian shield volcanoes are eroded by steams that form deeply carved valleys with steeply sloping heads. D) The system of streams on a dissected volcano cone is not a radial drainage pattern.
 
Answer & Explanation Answer: D) The system of streams on a dissected volcano cone is not a radial drainage pattern.

Explanation:

Stratovolcano,    also    known    as acomposite  volcano,  is  aconical volcanobuilt  up  by  many  layers (strata) of hardened lava, tephra, pumice and ash. Because it is stratified, therefore  it  will  definitely  form  a volcano cone.

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Q:

Tsunami waves are the undersea occurrence of earthquake exceeding 7.5 on Richter scale. Which one of the following statements regarding this is not correct?

A) It often generates strong waves B) The pacific coasts are most vulnerable to Tsunami waves.
C) Tsunami waves are also called high-energy tidal waves or seismic sea waves. D) Tsunami is a Latin word.
 
Answer & Explanation Answer: D) Tsunami is a Latin word.

Explanation:

All   are   correct   except   D,   as Tsunami is a Japanese word

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Q:

_____ is the source of energy and materials in human beings.

A) Water B) Sunlight
C) Food D) Gas
 
Answer & Explanation Answer: C) Food

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