Answer the case-based question given below.
A chemical reaction is a representation of chemical change in terms of symbols and formulae of reactants and products. There are various types of chemical reactions like combination, decomposition, displacement, double displacement, oxidation and reduction reactions.
Reactions in which heat is released along with the formation of products are called exothermic chemical reactions. All combustion reactions are exothermic reactions.
Reactions in which heat is released along with the formation of products are called exothermic chemical reactions. All combustion reactions are exothermic reactions.
a. A reaction releases heat to the surroundings and forms water from hydrogen and oxygen. Which statement is correct?
b. A white salt on heating decomposes to give brown fumes and yellow residue is left behind. The yellow residue left is of _________.
c. Which of the following reactions represents a combination reaction?
d. Complete the following statements by choosing correct type of reaction for X and Y.
Statement 1: The decomposition of potassium chlorate on heating is an example of ‘X’ reaction.
Statement 2: The reaction of hydrogen gas with oxygen to form water is an example of ‘Y’ reaction.
Statement 1: The decomposition of potassium chlorate on heating is an example of ‘X’ reaction.
Statement 2: The reaction of hydrogen gas with oxygen to form water is an example of ‘Y’ reaction.