Which of the following is not true of metals?
Metals are good conductors of electricity
Metals are malleable and ductile.
Metals form non-polar covalent compounds
Metal will have 1 or 2 or 3 electrons in their valence shell
Which metal is used as an electrode in dry cell?
Zinc
Iron
Mercury
Aluminium
In the blast furnace iron oxide is reduced by
Lime stone
Calcium silicate
Carbon monoxide
Carbon dioxide
The ability of metals to be drawn into thin sheets is known as
Ductility
Malleability
Sonorosity
Conductivity
Generally non-metals are not lustrous. Which of the following non-metals is lustrous?
Sulphur
Phosphorus
Nitrogen
Iodine
Which of the following methods is suitable for preventing an iron frying pan from rusting?
Applying grease
Applying paint
Applying a coating of zinc
All the above
Pine oil used in froth floatation process acts as a
water repellant
frother
Calcinator
Roaster
An alloy is
An element
A compound
A homogeneous mixture
A heterogeneous mixture
A non-metal which is good conductor of electricity is
diamond
graphite
Gold
Platinum
CuFeS2 is known as
copper pyrites
cuprite
copper sulfate
cinnabar