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 General Science Questions

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Q:

Potassium Permanganate is used for purifying drinking water, because

A) it is a sterilising agent B) it dissolves the impurities of water
C) it is a reducing agent D) it is an oxidising agent
 
Answer & Explanation Answer: D) it is an oxidising agent

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Q:

The gases used in different types of welding would include

A) oxygen and hydrogen B) oxygen and acetylene
C) oxygen, acetylene and argon D) oxygen, hydrogen, acetylene and nitrogen
 
Answer & Explanation Answer: B) oxygen and acetylene

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Q:

The radioactive element most commonly detected in humans is

A) potassium-40 B) cobalt-60
C) iodine-131 D) plutonium-238
 
Answer & Explanation Answer: A) potassium-40

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Q:

Which of the following statements about the Himalayan Mountains is NOT correct ?

 

A) The range lying to the immediate south of the Himadri is called the Shiwaliks. B) The Shiwalik ranges are composed of unconsolidated sediments brought down by rivers.
C) The core of the Himadri is made of granite. D) Its northernmost part is called the Himadri.
 
Answer & Explanation Answer: A) The range lying to the immediate south of the Himadri is called the Shiwaliks.

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Q:

The Ozone Layer restricts from

A) Infrared Rays B) Radio waves
C) Ultraviolet Radiation D) X-Rays and Gamma Rays
 
Answer & Explanation Answer: C) Ultraviolet Radiation

Explanation:

The Ozone layer which is present in the Earth's atmosphere protects it by restricting from UV or Ultraviolet radiation, the dangerous rays contained by Sun.

the_ozone_layer_restricts_us_from1542267550.jpg image

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60 18286
Q:

The filament of an electric bulb is made of

A) tungsten B) nichrome
C) graphite D) iron
 
Answer & Explanation Answer: A) tungsten

Explanation:

A filament is a metal wire that glows when electricity is channeled into it. The filament of an electric bulb is made of Tunsten. 

 

The_filament_of_an_electric_bulb_is_made_of1554113110.jpg image

 

Because of its high melting point and its greatest tensile strength, it makes for a good filament in light bulbs.

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69 18121
Q:

In the context of plate tectonics, which of the following statements is NOT correct?

 

A) Eurasian plate is largely an oceanic plate. B) The major tectonic plates are surrounded by young fold mountain ridges, trenches, and/or faults.
C) Tectonic plates move horizontally over the asthenosphere. D) Earth's surface is divided into seven major plates.
 
Answer & Explanation Answer: A) Eurasian plate is largely an oceanic plate.

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Q:

Chilling is most commonly practiced by

Answer

Chilling is most commonly practiced by Food Handlers like restaurents, hotels,...


 


 Chilling_is_most_commonly_practiced_by1556260019.jpg image







    • Chilling or Cooling is nothing but preserving the food in a cool storage like refrigerators.



 

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