Science & Technology - GS questions based on daily current affairs for Q. 19385

Q.  Which of the following is/are true?

1) Nitrogen ice is less dense than water ice.
2) Atomic number of nitrogen is 8.
- Published on 10 Feb 16

a. Only 1
b. Only 2
c. Both 1 and 2
d. Neither 1 nor 2

ANSWER: Neither 1 nor 2
 
  • New horizons mission has captured images of frozen nitrogen glaciers on Pluto.
  • Since water ice is less dense than nitrogen-dominated ice, scientists believe these water ice hills are floating in a sea of frozen nitrogen and move over time like icebergs in Earth’s Arctic Ocean.
  • Atomic number of Nitrogen is 7. Melting Point of nitrogen is -210°C.
  • Liquid nitrogen can easily be converted to a solid by placing it in a vacuum chamber.

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