MEDIUM
9th ICSE
IMPORTANT
Earn 100

"Respiration is an exothermic process". Justify your statement.

Important Questions on Chemical Changes and Reactions

MEDIUM
9th ICSE
IMPORTANT
Endothermic reaction is also known as _____.
MEDIUM
9th ICSE
IMPORTANT
What is meant by the term photochemical reaction?
MEDIUM
9th ICSE
IMPORTANT
Define the term electrochemical reaction, Give one example.
MEDIUM
9th ICSE
IMPORTANT
_____ is always either taken in or given out.
MEDIUM
9th ICSE
IMPORTANT
Chemical changes bring a change in the _____ properties of matter.
MEDIUM
9th ICSE
IMPORTANT
When calcium oxide reacts with water to form calcium hydroxide, the reaction is called _____ reaction.
MEDIUM
9th ICSE
IMPORTANT
Decomposition of substance using heat is called _____ decomposition.
MEDIUM
9th ICSE
IMPORTANT
If one of the product in double displacement reaction is insoluble in aqueous medium, the reaction is called _____ reaction.