Question

chemical formulae of Calamine, Haematite and Corundum​

Answer 1

Explanation:

Calamine-ZnCO3

Haematite-Fe2O3

Corundum-Al2O3

Answer 2

Answer:

$\bold\red{Calamine}$

• Chemical Formula - $\bold\pink{Fe_{2}O{4}Zn}$

• An ore of Zinc

• Used as lotions.

• Treats itching, skin irritation, caused due to Chickenpox, insect bites, etc.

$\bold\red{Haematite}$

• Chemical Formula - $\bold\pink{Fe_{2}O_{3}}$

• Originated from sedimentary rocks

• Distributed in cements

• Found in earth with magnetite ore.

• Not so much commercial use.

• Produce pigments, radioactive oxidation.

$\bold\red{Corundum}$

• Chemical Formula - $\bold\pink{Al_{2}O_{3}}$

• Crystalline form of Aluminium Oxide.

• Hexagonal crystal compound.

• Found in igneous, metamorphic rocks.

• Deep red color.

• Very expensive like Ruby.