MEDIUM
9th Chhattisgarh Board
IMPORTANT
Earn 100

Write the balanced chemical equation for the following and identify the type of reaction.

Sodium hydrogencarbonate→Sodium carbonate+carbon dioxide+water

Important Questions on Chemical Reactions and Equations

MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 7
Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 8
Write one equation each for decomposition reactions where energy is supplied in the form of heat, light or electricity.
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 9
What is the difference between displacement and double displacement reactions? Write equations for these reactions. 
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 10
Give two examples of redox reactions. 
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 11
Explain the chemical reactions that take place in the presence of sunlight. 
MEDIUM
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 12
What do you understand by precipitation reactions? Explain using examples. 
EASY
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 13
Explain exothermic and endothermic reactions through examples.
HARD
9th Chhattisgarh Board
IMPORTANT
Science (Theory & Practical) Class-9>Chapter 10 - Chemical Reactions and Equations>Exercises>Q 14
Hanif burnt a magnesium ribbon using a spirit lamp and on the basis of his observations he said that the type of chemical reaction taking place is combination as well as exothermic as well as oxidation. Do you agree with Hanif? Give reasons for your answer and explain.