The purest form of iron which contains only about 0.1% carbon is
pig iron
wrought iron
cast iron
iron pyrite
A characteristic shared by zinc and other transition elements is the ability to
have variable oxidation states
form complex ions
act as a catalyst
form coloured ions
Which of the following metals is the least reactive?
Pb
Sn
Hg
Au
Geometric isomerism can exist in
hex‑3‑ene
hexane
prop‑1‑ene
3‑methylbut‑1‑ene
Alkanals can be distinguished from alkanones by reaction with
Sudan III stain
starch iodide paper
lithium tetrahydridoaluminate(III)
Fehling’s solution
