The Full Wiki

Palladium: Quiz


Question 1: [5] Wollaston found palladium in crude platinum ore from ________ by dissolving the ore in aqua regia, neutralizing the solution with sodium hydroxide, and precipitating platinum as ammonium chloroplatinate with ammonium chloride.
Latin AmericaSouth AmericaNorth AmericaAmericas

Question 2: Common ________ of palladium are 0,+1, +2 and +4.
Oxidation stateOxideHydrogenOxygen

Question 3: Palladium may be found as a free metal alloyed with gold and other platinum group metals in placer deposits of the Ural Mountains, ________, Ethiopia, South and North America.
AustraliaBarbadosUnited KingdomCanada

Question 4: (See also ________ (41), ruthenium (44), and rhodium (45).)

Question 5: Palladium hydride is metallic palladium that contains a substantial quantity of hydrogen within its ________.
Crystal growthSolidCrystal structureCrystallography

Question 6: Palladium is also produced in ________ reactors and can be extracted from spent nuclear fuel (see synthesis of noble metals) though the quantity produced is insignificant.
UraniumNuclear fissionPlutoniumNuclear fusion

Question 7: 107Pd versus Ag correlations observed in bodies, which have clearly been melted since accretion of the ________, must reflect the presence of short-lived nuclides in the early solar system.
EarthSolar SystemPlanetSun

Question 8: When it is finely divided, such as in palladium on carbon, palladium forms a versatile ________ and speeds up hydrogenation and dehydrogenation reactions, as well as in petroleum cracking.

Question 9: Palladium plays a key role in the technology used for ________, which combines hydrogen and oxygen to produce electricity, heat and water.
Zinc-air batteryFlow batteryFuel cellLead-acid battery

Question 10: Palladium, along with platinum, rhodium, ruthenium, ________ and osmium form a group of elements referred to as the platinum group metals (PGMs).

Got something to say? Make a comment.
Your name
Your email address