Question

plz solve the given questions as attachment.....​

Answer 1

Question:-

How many metals can be extracted from carnalite ?

Answer:-

Only two metals be extracted from carnalite .

• Potassium
• Magnesium

Question:-

What is the valency of iron present in haematite?

Answer:-

In haematite ( Fe _2 O_ 3)

let valency of iron is X ,

hence,

2 x + ( 3× -2)= 0

2 x = 6

x= +3

so , valency of iron in haematite is +3.

Answer 2

Answer:

Potassium:

MedlinePlus Potassium is a mineral that your body needs to work properly. It is a type of electrolyte. It helps your nerves to function and muscles to contract.

A diet rich in potassium helps to offset some of sodium's harmful effects on blood pressure.

Magnesium Oxide is the oxide salt of magnesium with antacid, laxative and vascular smooth muscle relaxant activities.

In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses.