Language of Chemistry

The valency of sulphate ion is

• 1

• 2

• -1

• -2

Aluminium is an element in the periodic table that always exists as a diatomic molecule

• True

• False

• I dont know

• will let you know

Balance the following equation: C3H8 + O2 --> CO2+ H2O

• 1,2,3,4

• 1,3,5,4

• 1,5,3,4

• 1,4,5.3

valency of lead in plumbous oxide is _________

As per the rules for naming a compound, a compound ending with "ite" will contain __________ oxygen atoms

• 1

• 2

• 3

• 4

The prefix "hypo" is added to the name of a compound if it has 1 oxygen less than the compounds ending in ----------

• ite

• ate

• thio

• per

variable valency is exhibited by the following atoms

• copper, iron, sodium, magnesium, lead, zinc

• copper, iron, lead, tin, mercury, arsenic

• copper, iron, lead, tin, sodium, magnesium

• copper, iron, tin, sodium, aluminium

FeCl3 + xNaOH → Fe(OH)3 + 3NaCl what is x?

• 2

• 1

• 3

• 4

4Al + 3O2 → xAl2O3 what is X?

• 1

• 2

• 3

• 4

Reduction is _________ of electrons

• loss

• gain

• sharing

• mutual distribution