Write the names of any two ores of iron?

Write the names of any two excretory organs in human beings.

Write the names of any two compounds which have ionic bond.

Write the names of any pesticides.

Write the names of any four mononuclear phagocytes.

Write the names and formulae of any two ores of iron

Write the names of any two liquid fuels.

Write the names and formulae of any two oxyacids of sulphur. Indicate the oxidation state of sulphur in them.

Write any two uses of argon.

Write the names and formulae of any tow minerals of Cu. How is the Cu extracted ?

ONE WORD ANSWER QUESTION Write names of any three deficiency diseases.