MEDIUM
10th ICSE
IMPORTANT
Earn 100

Give reason for the following:

Silver articles become black after some time when exposed to air.

Important Questions on Metals and Non-metals

MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 1
What is 'activity series of metals'? Arrange the metals Zn, Mg, Al, Cu, and Fe in decreasing order of reactivity.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 1
What would you observe when you put some copper pieces into green ferrous suphate solution?
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 1
Name a metal that combines with hydrogen gas.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 2
What type of ores are calcined? Illustrate giving a suitable example.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 2
In what form calcined ore is obtained and how it can be reduced? Give chemical equations of the reduction process involved for the example given by you.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 2
 Name two metals used as reducing agents by displacing metals of lower reactivity from their compounds.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 3
With the help of a chemical equation, explain the extraction of metal from its ore when metal is least reactive.
MEDIUM
10th ICSE
IMPORTANT
Science Chemistry>Chapter 3 - Metals and Non-metals>ASSESSMENT>Q 3
With the help of a chemical equation, explain the extraction of metal from its ore when metals are medium reactive.