MEDIUM
10th ICSE
IMPORTANT
Earn 100

Give a reason: Aluminium is more reactive than iron. Yet there is a less corrosion of aluminium, when both are exposed to air.

Important Questions on Metals and Non-metals

MEDIUM
10th ICSE
IMPORTANT
Give reason: Why reaction of nitric acid with metals generally does not evolve hydrogen gas?
EASY
10th ICSE
IMPORTANT
A compound 'X' conducts electricity and is soluble in water. What type of compound is X, ionic or covalent? Assign other two properties of compound X other than given in the question.
MEDIUM
10th ICSE
IMPORTANT
A metal M forms an oxide having the formula M2O3. It dissolves in both dilute sulphuric acid and dilute sodium hydroxide solution. Identify the metal and write equations for the reaction involved.
EASY
10th ICSE
IMPORTANT
Mercury is placed low in the activity series. Which method is used for the extraction of this metal from its ore cinnabar (HgS)? Write the chemical equations involved in the above process.
MEDIUM
10th ICSE
IMPORTANT
Zinc is placed in the middle of the activity series. Which method is used for the extraction of this metal from its ore.ZnS and ZnCO3? Write the chemical equations involved in the above process.
MEDIUM
10th ICSE
IMPORTANT

Complete the following reaction with balanced chemical equation.

Al2O3(s) + HCl(aq) 

MEDIUM
10th ICSE
IMPORTANT

Complete the following reaction with a balanced chemical equation:

Al2O3(s) + NaOH(aq) 

MEDIUM
10th ICSE
IMPORTANT

Complete the following reaction with a balanced chemical equation.

Fe(s) + H2O(g)