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Argon: Quiz


Question 1: An argon atmosphere is also used for growing crystals of silicon and ________.

Question 2: Argon may be used as the carrier gas in gas chromatography and in ________; it is the gas of choice for the plasma used in ICP spectroscopy.
Time-of-flight mass spectrometryElectrospray ionizationIon sourceMatrix-assisted laser desorption/ionization

Question 3: [24] Argon is also used in technical scuba diving to inflate a ________, because it is inert and has low thermal conductivity.
Diving suitWetsuitDry suitRebreather

Question 4: Argon has ________ 18 and is the third element in group 18 of the periodic table (noble gases).
Chemical elementLanthanumHafniumAtomic number

Question 5: Argon is isolated from air by fractionation, most commonly by ________ fractional distillation, a process that also produces purified nitrogen, oxygen, neon, krypton and xenon.
EngineeringHealth scienceMetallurgyCryogenics

Question 6: Argon is used in various types of ________ such as tungsten inert gas welding, as well as in the processing of titanium and other reactive elements.
Gas metal arc weldingArc weldingGas tungsten arc weldingShielded metal arc welding

Question 7: [3] Also argon-containing ________ and excited state complexes, such as ArH+ and ArF, respectively, are known to exist.
Half cellIonLithium-ion batteryElectrolyte

Question 8: The main ________ of argon found on Earth are 40Ar (99.6%), 36Ar (0.34%), and 38Ar (0.06%).
Stable nuclideIsotopeAtomTechnetium

Question 9: In surgery it is used in a procedure called "argon enhanced coagulation" which is a form of argon plasma beam ________.
EnergyElectrochemistryElectric currentElectrosurgery

Question 10: For example, the creation of argon fluorohydride (HArF), a marginally stable compound of argon with fluorine and hydrogen, was reported by researchers at the ________ in 2000.
University of HelsinkiUniversity of LjubljanaComplutense University of MadridVilnius University

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