Iron: Quiz


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More interesting facts on Iron

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Question 1: In cells, iron is generally stored in the centre of metalloproteins, because "free" iron (which binds non-specifically to many cellular components) can catalyse production of toxic ________.
Oxidative stressOxygenAntioxidantRadical (chemistry)

Question 2: ________ contains 2–4% carbon, 1–6% silicon, and small amounts of manganese.
Alloy steelWrought ironCast ironSteel

Question 3: Fresh iron surfaces are lustrous and silvery-grey in color, but oxidize in air to form a red or brown coating of ferric oxide or ________.
SteelCorrosionRustStainless steel

Question 4: El Mutún in ________, where 20% of the world's accessible iron and magnesium is located.

Question 5: Ninety percent of all ________ of metallic ores is for the extraction of iron.
MetallurgyMiningMining engineeringArchaeology

Question 6: In the last decade however, advances in ________ technology have allowed the detection and quantification of minute, naturally occurring variations in the ratios of the stable isotopes of iron.
Mass spectrometryEnzyme assayAutopsyChromatography

Question 7: Damage to the cells of the ________ can also prevent them from regulating iron absorption leading to further increases in blood levels.
Ascending cholangitisHuman gastrointestinal tractPeritonitisColorectal cancer

Question 8: This last nuclide is therefore common in the universe, relative to other stable ________ of approximately the same atomic weight.
Stellar classificationMetallicitySupernovaStar

Question 9: Iron (pronounced /ˈаɪ.ərn/) is a metallic chemical element with the symbol Fe (Latin: ferrum) and ________ 26.
LanthanumPeriodic tableAtomic numberHafnium

Question 10: Iron is a group 8 and period 4 element and is therefore classified as a ________.
ActinoidTransition metalPeriodic tableNoble gas

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