Science & Technology Quiz

15 Questions  I  By Coolpuneet007
This quiz section is generally for students. . . For those students who are from science streamso lets see how much you know

  
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Question Excerpt

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1.  What is the process responsible for producing photons in a diode laser?
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2.  Exhaled air has what % of its oxygen left?
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3.  What was the active medium used in the first working laser ever constructed?
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4.  What was the coldest temperature ever recorded on Earth (at Vostok, Antarctica)?
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5.  Where was the first oil well struck in the world?
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6.  Pure water freezes at what temperature?1) 2) 3) 4) 
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7.  The Law of Octaves was given by...?
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8.  Much of our body heat escapes through the head. What percent is this?
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9.   Lux is the unit of...?
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10.  What is dry ice?
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11.  After the first photons of light are produced, which process is responsible for amplification of the light ?
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12.  What was the first element to be produced artificially ?
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13.  Breaking of a larger hydrocarbon molecule into a smaller one by heating in the presence of a catalyst is called ___.
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14.  Which of these has the highest calorific value?
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15.  In what country must you turn over any meteor finds?
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pls give the answers of the above published questions.
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