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The residual solids from the fractional distillation of petroleum are used as
coatings of pipes
raw materials for the cracking process
fuel for the driving tractors
fuel for jet engines
Stainless steel is used for making
magnets
tools
coins and medals
moving parts of clocks
A compound gives an orangered colour to non-luminous flame. This compound is likely to contain
Na+
Ca2+
Fe3+
Fe2+
When iron is exposed to moist air, it gradually rusts. This is due to the formation of
hydrate iron (III) oxide
anhydrous iron (III) oxide
anhydrous iron (II) oxide
hydrate iron (II) oxide
A constituent common to bronze and solder is
lead
silver
copper
tin
