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 General Science Questions

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Q:

Which of the following is a function of Earth's atmosphere?

A) supplies the oxygen and water for life B) screens out much of the Sun's ultraviolet radiation
C) insulates the surface against temperature extremes D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Here all the options given are important functions of Earth's atmosphere.

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Q:

Photorespiration lowers the efficiency of photosynthesis by

A) consuming carbon dioxide B) removing ribulose bisphosphate molecules
C) releasing RuBP carboxylase molecules D) None of the above
 
Answer & Explanation Answer: B) removing ribulose bisphosphate molecules

Explanation:

photorespiration lowers the efficiency of photosynthesis by removing ribulose bisphosphate molecules.

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Q:

The diploid generation of the plant life cycle always

A) produces eggs and sperm B) produces spores
C) is called the gametophyte D) develops from a spore
 
Answer & Explanation Answer: B) produces spores

Explanation:
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Q:

Plants that are more rare today are

A) Hydrophytes B) Xerophytes
C) Mesophytes D) None of the above
 
Answer & Explanation Answer: A) Hydrophytes

Explanation:
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Q:

Collisions occur at curves because

A) speed on the approach is too great B) speed leaving the curve is not enough
C) speed leaving the curve is too great D) speed on the approach is not enough
 
Answer & Explanation Answer: A) speed on the approach is too great

Explanation:

Collisions occur at curves because speed on the approach is too great.

Collisions_occur_at_curves_because1560944223.jpg image

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Q:

What is the main cause of Tsunami?

A) Tectonism B) Earthquake on Sea Surface
C) Tidal force D) All of the above
 
Answer & Explanation Answer: B) Earthquake on Sea Surface

Explanation:

The main cause of Tsunami is Earthquake on Sea Surface.

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Q:

Term ‘Visible Horizon’ in astronomy is defined as:-

A) The circle of contact of the earth and the cone of visual rays passing through the meridian of the place. B) The circle of contact of the earth and the cone of visual rays not passing through the meridian of the place.
C) The circle of contact of the earth and the cone of visual rays passing through the point of observation. D) The circle of contact of the earth and the cone of visual rays not passing through the point of observation.
 
Answer & Explanation Answer: C) The circle of contact of the earth and the cone of visual rays passing through the point of observation.

Explanation:

Visible Horizon is the circle of contract, with the earth, of the cone of visual rays passing through the point of observation.

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Q:

Which energy source generates the least greenhouse gases?

A) Fossil fuels energy B) Nuclear energy
C) Solar energy D) All of the above
 
Answer & Explanation Answer: A) Fossil fuels energy

Explanation:

Fossil fuels energy source generates the least greenhouse gases. Of them, i.e, oil, natural gas and coal, natural gas source generates the least greenhouse gases.

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