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Select from the following a decomposition reaction in which source of energy for decomposition is light :
Which of the following is not a thermal decomposition reaction?
What is a chemical reaction ? Describe one activity each to show that a chemical change has occurred in which (i) change of colour, and (ii) change in temperature has taken place.
Define a decomposition reaction. How can we say that (I) electrolysis of water, and (II) blackening of silver bromide when exposed to sunlight, are decomposition reactions ? Mention the type of energy involved in each case.
The type of reactions in which (I) calcium oxide is formed, and (II) calcium hydroxide is formed are opposite reactions to each other. Justify this statement with the help of chemical equations.
Write the essential conditions for following reaction to take place and name its types : 2AgCl → 2Ag + Cl₂
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