MEDIUM
10th CBSE
IMPORTANT
Earn 100

When copper is heated strongly in air, it forms copper oxide. Write a balanced equation for this reaction by mentioning the substance oxidised and substance reduced.

Important Questions on Chemical Reactions and Equations

EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 5
Give an example of chemical reaction that is characterised by change in colour.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 6
Mention any two characteristics of the chemical reaction which takes place when dilute sulphuric acid is poured over zinc granules.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 7
Give a balanced equation for the redox reaction.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 7

Give a balanced equation for the following reactions:

Thermal decomposition reaction.

EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 8
''Respiration is an exothermic process." Comment.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 8
Why photosynthesis is considered as an endothermic reaction? Explain.
MEDIUM
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 9
Give the word equation for the following and then balance the equation:
Sodium carbonate combines with hydrogen chloride acid to form sodium chloride, water and carbon dioxide.
EASY
10th CBSE
IMPORTANT
Concise Chemistry Part 2>Chapter 1 - Chemical Reactions and Equations>MOCK TEST - 1>Q 9
Give the word equation for the following and then balance the equation:
Zinc metal reacts with hydrochloric acid to produce a solution of zinc chloride and hydrogen gas.