MEDIUM
9th Chhattisgarh Board
IMPORTANT
Earn 100

Explain the chemical reactions that take place in the presence of sunlight. 

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 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.