One of the products of the thermal decomposition of sodium trioxonitrate (V) is?
sodium
nitrogen
sodium dioxonitrate (III)
sodium oxide
Correct answer is C
No explanation has been provided for this answer.
In the electrolytic extraction of aluminum, the function of the molten cryolite is to
precipitate aluminium hdroxide
lower the melting point of aluminium oxide
act as a raw materials
act as a solvent
Correct answer is B
No explanation has been provided for this answer.
The type of iron that is best suited for welding, making nails, chains and iron rods is?
pig iron
wrought iron
cast iron
iron pyrites
Correct answer is B
uses of wrought iron
Copper metal dissolves in concentrated trioxonitrate (V) acid with the resultant evolution of?
CO2
SO2
NO2
CO
Correct answer is C
Oxidation of Copper turnings with concentrated trioxonitrate (V) acid wil
Cu + 4HNO\(_3\) → CuNO\(_3\) + 2H\(_2\)O +2NO\(_2\).
which of the following metals will show the highest metallic character?
Zinc
Copper
Barium
Calcium
Correct answer is C
The reactivity series of metals, also known as the activity series, refers to the arrangement of metals in the descending order of their reactivities.
Na > Ca > Mg > Al > Zn > Fe > Sn > Pb > Cu > Ag.
Considering metallic property which increases down the group, barium will be ranked calcium