1.
2Li + H2 --------> 2LiH is an example of the production of
a. ionic hydride
b. metallic hydride
c. molecular hydride
d. hydrate
2.
Gold is concentrated from lower grade sources by the process of
a. smelting
b. roasting
c. refining
d. calcination
e. leaching
f. cyanidation
3.
Solid inorganic compounds are called
a. ores
b. minerals
c. metals
d. non-metals
4.
When ferromagnetic solids are placed in a magnetic field, which direction do the electrons align?
a. opposite the field
b. in line with the field
c. adjacent to the field
d. perpendicular with the field
5.
Improving the purity of a metal is called
a. smelting
b. roasting
c. refining
d. calcination
1) Lithium is an alkali metal and hence forms ionic hydride.
2) Cynidation
3) minerals
4) in line with the field
5) Refining
1. 2Li + H2 --------> 2LiH is an example of the production of a. ionic hydride...
1. Improving the purity of a metal is called smelting roasting refining calcination 2. A compound that is formed when two metallic components have similar atomic radii is called interstitial alloy substitutional alloy solution alloy ahoy there alloy