Extraction of Zinc

What is the boiling point of Zinc?

• 907 °C

• 1500 °C

• Does not have one

• 100 °C

How can obtain Zinc Oxide from Zinc blende?

• Naturally occurs

• Roasting

• Electrolysis

• Dipping in water

Why does brass need zinc?

• To decrease Strength

• For appearance

• Brass does not include Zinc

• To increase Strength

Why is Zinc used to galvanize instead of copper?

• We don't use Zinc, instead we use copper

• We don't use both

• Zinc Oxidizes faster

• Copper oxidizes faster

What are the waste gas that escapes in Zinc Extraction?

• Carbon and Carbon dioxide

• Carbon monoxide and Oxygen

• Carbon and Oxygen

• Carbon monoxide and Carbon dioxide

What state is Zinc in the Final Mixture?

• Solid

• Liquid

• Gas

Brass contains 30% copper and 70% zinc

• False

• True

We remove the impurities of Zinc by Filtration

• True

• False

Zinc Ore is called Zinc Blende

• True

• False

Why do we galvanize metal?

• To make the surface of the metal smooth

• To prevent rusting

• To melt the metal

• To corrode the metal