HARD
10th CBSE
IMPORTANT
Earn 100

Differentiate between electrolytic reduction and electrolytic refining. 

Important Questions on Question Bank

HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 19
A divalent metal burns in air with a dazzling white light. The ash-like residue obtained dissolves in water to form a solution which turns red litmus blue. 
(i) Identify the metal. 
(ii) Is the solution acidic or basic? 
(iii) Write the equations for the reactions involved. 
 
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 20
What is metallurgy? 
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 21
How does calcination differ from roasting? 
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 22
Describe an activity to study the reactivity of Mg, Al, Zn & Cu towards dilute hydrochloric acid. 
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 23

Write equation for the following reaction. 

Zinc blende is heated in air. 

MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 23

Write equation for the following reaction. 

Zinc carbonate is heated in the absence of air. 

MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 23

Write an equation for the following reaction. 

Manganese dioxide is heated with aluminium powder.

HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 10 - Question Bank>Question Bank>Q 24
A metal A belonging to group 2 of the periodic table when treated with water produced a compound B. B when heated formed an oxide C. C on treatment with water gave back the compound B. 
(i) Identify the metals A, B & C. 
(ii) Write the equations for the reactions involved.