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SAI International School
Class-X

Subject_ Chemistry
Topic-Chemical Reactions and Equations
Ch-1 Revision of Chemical Reactions and Equations

Concept mapping
Home Assignment

Concept_Characteristics of Chemical Reaction

Q1. State two characteristics of the chemical reaction which takes place 1
when dilute sulphuric acid is poured over zinc granules

Q2 Mention two characteristics of the chemical reaction which occurs on 1
adding potassium iodide solution to lead nitrate solution.

Q3 Give an example of chemical reaction showing the characteristics of 1
change in temperature

Q4 Identify the characteristics of the chemical reaction which occurs on 1
adding barium hydroxide solution to ammonium chloride solution.
Q5 Magnesium burns in air to form magnesium oxide. Which characteristic 1
of chemical reaction is seen in the above reaction?

Concept_Balancing Chemical Equations

Q1. Write the balanced chemical equation of the chemical reaction which 1
takes place when dilute sulphuric acid is poured over zinc granules

Q2 Write the balanced chemical equation of the chemical reaction which 1
occurs on adding potassium iodide solution to lead nitrate solution.

Q3 Why is it necessary to balance a chemical equation? 1

Q4 Correct and balance the following equation 1

Ca+H 2O Ca(OH) 2+H 2

Q5 Magnesium burns in air to form magnesium oxide. Write the balanced 1
chemical equation of the above chemical reaction.

Concept_Types of Chemical Reaction

Q1. Give an example of double displacement reaction which is endothermic. 1

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