EASY
Earn 100

List three metals that are found in nature in uncombined form.

Important Questions on Metals and Non-metals

MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
"All ores are minerals, but all minerals are not ores". Justify.
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Different methods are used for the concentration of ores.

What is the ore of aluminium?

EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Name two metals which are found in nature in the free state.
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Find the odd man out: 

Tinning, Anodisation, Alloying, Froth floatation. 

HARD
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Carbon cannot reduce the oxides of sodium, magnesium and aluminium to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Cinnabar is an ore of which metal?
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Why zinc blend can be called both mineral and ore of Zinc?
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
How do we extract metals low in activity series from their ores?
HARD
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
 Write differences between mineral and ore with example.(any three) 
 
MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Define the following term with example. 

Ore 

MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
In the Wilfley table method, the particles of gangue are separated by the _____ separation method.
MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Write the steps involved in the extraction of pure metals in the middle of the activity series from their carbonate ores.

MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Name the process by which impure ore of aluminium gets purified by using concentrated solution of an alkali.
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Define the term-

(i.) Ore
(ii.) Gangue

EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Bauxite, an ore of aluminium, is purified by which process?
HARD
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Write short note on electrolytic refining of metals.

MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
What is anode mud?
MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals

Define the following term with example. 

Mineral 
 

MEDIUM
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
How is copper extracted from its sulphide ore? Explain the various steps supported by chemical equations. Draw labelled diagram for the electrolytic refining of copper.
EASY
Science>Chemistry>Metals and Non-metals>Occurrence of Metals
Give the name and chemical formula of one ore of copper.