WorksheetsCryogenics Quiz
Total questions: 20
Worksheet time: 7mins
What is the temperature range generally considered as cryogenic?
Below 0°C
Below -100°C
Below -150°C
Below -273°C
Which of the following gases is commonly used in cryogenic applications?
Carbon Dioxide (CO₂)
Nitrogen (N₂)
Argon (Ar)
Ozone (O₃)
Which of the following is the boiling point of liquid oxygen (O₂) at 1 atm pressure?
90 K
77 K
20 K
4.2 K
Liquid hydrogen (H₂) is stored at approximately:
273 K
77 K
20 K
4 K
What is a major application of liquid helium (He) in cryogenic systems?
Space propulsion
Superconducting magnets
Air conditioning
Welding
In which year did Michael Faraday liquefy gases such as chlorine and ammonia?
1823
1844
1877
1908
Who first proposed the concept of mechanical refrigeration in 1844?
James Joule
John Gorrie
Carl von Linde
Thomas Mort
Which two researchers successfully liquefied oxygen (O₂) and nitrogen (N₂) in 1877?
Bell and Coleman
Thomas Mort and James Harrison
Pictet and Cailletet
Dewar and Kammerlingh Onnes
Carl von Linde made significant contributions to cryogenics by developing:
The first air liquefaction process
The first cryogenic refrigerator
Superconducting materials
Cryogenic insulation
Which scientist liquefied helium for the first time in 1908?
Carl von Linde
Heike Kamerlingh Onnes
James Dewar
William Thomson (Lord Kelvin)
What happens to the thermal conductivity of most metals at cryogenic temperatures?
Increases
Decreases
Remains constant
Becomes zero
Which of the following materials is brittle at cryogenic temperatures?
Copper
Stainless Steel
Rubber
Glass
Which of the following is a key challenge in selecting materials for cryogenic applications?
Corrosion resistance
Thermal expansion mismatch
High weight
High melting point
At cryogenic temperatures, electrical resistivity of pure metals generally:
Increases
Decreases
Remains constant
Becomes infinite
The phenomenon of superconductivity was first observed in:
Helium gas
Mercury
Nitrogen
Aluminum
Which of the following materials remains superconducting at the highest temperature?
Mercury
Yttrium Barium Copper Oxide (YBCO)
Lead
Tin
Helium-3 (He-3) differs from Helium-4 (He-4) in that:
It is a heavier isotope
It is a fermion instead of a boson
It has a lower boiling point than He-4
All of the above
What is the boiling point of Helium-4 (He-4) at 1 atm?
77 K
20 K
4.2 K
0.3 K
Hydrogen (H₂) in its liquid state is primarily used for:
Rocket propulsion
Medical applications
Superconductors
Laser cooling
What is a unique property of Helium-4 (He-4) at very low temperatures (<2.17 K)?
It solidifies
It turns into a superfluid
It becomes magnetic
It undergoes nuclear fusion
