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When calcium oxide reacts with water to form calcium hydroxide, the reaction is called reaction.

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Important Questions on Chemical Changes and Reactions

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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 4
Decomposition of substance using heat is called _____ decomposition.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 5
If one of the product in double displacement reaction is insoluble in aqueous medium, the reaction is called _____ reaction.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 6
When acid or base reacts to form neutral salt solution, the reaction is called _____.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 7
In exothermic reaction, _____ of heat occurs.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 8
During a chemical reaction overall mass of the product formed is _____ that of reactants.
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 9
Chemical change sometimes evolve in the form of 
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 10
In which of the following process new substance(s) are formed?
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9th ICSE
IMPORTANT
All In One ICSE Chemistry>Chapter 2 - Chemical Changes and Reactions>EXAM PRACTICE>Q 11
The catalyst used as a promoter for the formation of ammonia gas is